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Places to loose weight in a Mk1 VW: in no particular order
1)remove undercoating from bottom of car
2)remove asphalt sound deadening that is attached to the inside floor
3)remove sound deadening under the carpet - VW has used several types over the years, sand, thick felt, foam- westy is most likely foam backed rubberized cardboard. and from under the hood if it's still there
4)You should already have aluminum bumpers, if not, the steel core bumpers are 45# each.
5)replace the telescopic bumper mounts with solid stamped steel bumper mounts from base model.
6) remove any unused carpet and side panels.
7) Solid disk front brake rotors- your car should have them already
8) light weight rims and tires
9) replace factory seats with something lighter like Lotus Elise seats or aluminum racing seats.
10) replace widow glass with lexan,polycarbonate etc - light weight plastic but I'm not sure which will last the longest/not scratch easy
11) make bolt on body parts like hood, fenders, doors, hatch, etc out of carbon fiber.
12) smaller alternator and battery
13) replace any steel brackets with ones made of aluminum.
14) remove any excess muffler/exhaust components. - replace cast iron manifold with tubular headers.
A friend has a 77 Rabbit that is in the 1600lbs range. Once you are done striping all the comfort items out of the car you will be left with a tin can brick with the aerodynamics of said brick. you will need ear plugs to drive = you wont want to drive it after spending lots of time and money. That will give you excelent savings in fuel since you wont be driving anyplace.
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