Originally posted by DB7 2.0
you already have flat top pistons which are cool 
but if you want to raise compression then i guess you can swap in some b18c/GSR pistons which are slightly domed.
nahh.. you dont want to do that. US B18C1/GSR pistons have less dome than B17A1 pistons.
consider how much money you have and work from there. the B17A1 is an outstanding platform to work from, check the link in my sig to see the work i've done to my B17, which still has room for improvement. but then again, who can turn a blind eye to an R motor.