All exterior panels, bumper bars, body kits, trim, mouldings,
glass, lights, underbody and engine bay. The customising scope deals
with enhancements such as bolt-on or moulded-in body kits and mods
like scissor doors and removing door handles etc, but no substantial
structural modifications like chopping or tubbing.
By Owen Webb
Meguiar’s Australia
The bodywork of a street or show car is often underestimated
when planning and building a project, yet it covers such a wide
range of areas and substrates. Substrates can include anything from
steel and aluminium, to fibreglass, carbon fibre, numerous plastics
and rubber. Condition and fitment of mouldings, handles, bumper
bars, glass and rubbers are also areas that need to be addressed.
Even standard cars can improve in these areas with refitting and
adjustment. It is important to take as much time as necessary to
ensure that all of these parts are installed perfectly if you are
looking to maximise the quality of fit and finish.
Planning
There is a lot of difference between the bodywork of a daily driver
and a purpose built showcar. From a judging perspective, as with
paintwork, the extent and quality of customising throughout the
undercar is what separates show from street, but the expectation
of a standout street car is to have high quality bodywork on all
the visible areas.
Before making the final decision on the extent
of bodywork mods, consideration must be given to the intentions
for your car, budget, who is doing the work, and the estimated time
frame. The preference would be to have the same shop do the bodywork
as well as the paintwork, as there needs to be consultation on the
progression of work from body to paint. If you do have a separate
shop handling the bodywork, or you are doing some of the work yourself,
you will need to have any repairs finished off with 240 grade sanding
paper and the body sanded ready for primer. At this stage you should
ensure the body repairer hands over your car complete to this level
so your painter doesn't have to spend another couple of days preparing
for paint and blowing out your budget.
Street use
The three key areas to consider here are legal issues, practicality
and reparability. However, the minimum expectation of any bodywork
would be for the panels to be straight with consistent panel gaps.
With clever planning and application you could fit a practical body
kit (not too low for driveways and speed humps), but spend the time
to trim and file edges for close fit before final assembly. This
can take several hours or even days of trial fitting to get right,
depending on the quality of the fibreglass body kit. There are also
numerous off the shelf kits available for mods like scissor and
suicide doors, carbon fibre panels, and better looking lights and
lenses etc.
Bodywork customising for a streetcar could
range from $1600 for a bolt-on lower skirt kit up to $8000 for basic
repairs and a full moulded body kit. This is purely a guide and
total costs will vary depending on condition of the body.

Show quality
The difference with show quality bodywork is usually the amount
of customising carried out, especially to the undercar. There is
less consideration given to practicality and reparability as the
car wouldn’t expect to see a lot of street use. This is where
you may choose to take all the proof-coat off the floor, then weld
and smooth all the seams and components. Alternatively you may plate
the whole floor and finish off the underbody to the same level of
quality as the main bodywork. This is a huge job but separates a
serious showcar from a streeter.
Body kits can also be used but would definitely
be moulded into the existing body. These could be made from fibreglass
or steel. The amount of work in file finishing a body for paint
is almost endless and not only will cost substantially more, but
there are still only a small number of professionals capable of
delivering such a finish. There is nothing more impressive than
a completely file finished metal body, and if your showcar has been
prepared this way make sure you have photos when displaying the
vehicle for the judges to inspect.
There are no problems when a small amount
of body filler has been used (called a skim), however when deep
dents, or fibreglass panels joined to metal have been finished with
excessive filler, problems are inevitable. Fibreglass or plastic
panels expand and have different flexibility to metal. This leads
to a scenario where cracks and delamination can occur. This is an
area where it would be better to look around for suitable body parts
from another car or make your own body panels or custom flares.
Hot rodders and street machiners have been forming panels from steel
for years.
Any customising must be done well and finished
in all areas to achieve the quality of finish expected for a showcar.
The cost of show quality bodywork could be anywhere from $10,000
to $20,000 depending on condition of body and amount of customising
to be done.

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