i like ur idea about 82 mm n/a pistons rangcrx. rs machine makes a type r copy piston in 82mm version. and its usually cheaper then the real r piston too. dont go gettin a b20 block bc the sleeves are known to be weak. i recently did the ls vtec n i LOVE IT! in fact, a friend of myne has a pretty decently built gsr n i always jump a car n a half or so right off the 3rd honk. the extra 2mm stroke is a definate plus.

simply put....follow the adivse of the poster above me. he knows his stuff.