Absolutely nothing, amazingly!!
I have changed the suspension (Spax PSX kit), fitted a st/st exhaust (modified Cosworth Mongoose system)& aluminium rocker covers (because they look nice!)
I bought the car mainly because it was fitted with a Turbo Technics 230 bhp / 270 lb/ft single turbo conversion. In addition to this it has excellent handling (4 wheel drive, Spax suspension & Sapphire Cosworth wheels / tyres) & excellent brakes. It can also hold its own against a 2wd Cossy and show a clean rear numberplate to a standard 4x4 Cossy !!
How much do these cars weigh?
Over 1300kg.