HEY, Just wondering if anyone had any knowledge of this. What pistons should I use to get higher compression with a Gsr head. Have b16a2 block. Had pr3 pistons didnt really do to much for me. Put in usdm type r's and they hit the head not the valves so had to use thicker head gasket. So that didnt really help out. Thinking of using p30's. Just trying to get something running half way decent till I get the $ to get the gsr built again. If anyone has some suggestions it would be greatly appreciated. Thanks in advance.