want to start building a poormans and trying figure out what internals i want to use. and need some questions answered. this is what i have... >b16a head (jdm/usdm?) and a b18c1usdm block. both have stock internals thinking about using ctr pistions. would i be able to use gsr rods? want to use ctr cams to. but could i get away with just using the intake and the stock b16 exhaust? can i use the b16 valves? would i run into compression and clearance issues with this setup? with a 2 layer head gasket.. dont know where to starts need help. has anyone tried this? can i just us b16 piston on the gsr. dont want to put too much money into the build. thanks. wanna get the best bang for buck.