b16 head + B18c1 block?

[Barefoot]

so if i go boost with the b16 head what pistons should i use?

anything with low comp. oem if u want to stay in the low boost and cheaper range. aftermarket just in case u feel the need for more boost 1 day which will happen.

would p30s or pr3s be to high of a CR for boost? or should i just get some JE gsr pistons?

yes and yes