beater1

I am trying to find a good high performance kit to run in the head to match the bottom end on my build (B18c1 gsr block fully built for turbo,type-R head with stage 3 street/strip power kit), but i dont know what is a good setup. I like crower, but have many options. Is it better to go with stock size valves or go bigger, either .5 or 1.0 oversized! Any suggestions about what i should use, brands, sizes, complete kits or pieced kits, but all for turbo! Please help!