lowered 30mm all round would be a good start, the wheels r smart, as is the rest of the car so dont really need to tinker with that unless u want to
maybe an aftermarket exhaust and air filter if u want to give it a bit more growl and a little more responsive
great lookin car tho, i wanted a c2 gt when i started lookin at cars but i wasnt as lucky as u to be able to afford one lol - even on finance
so yea- jealous lol