opinions on ZEX, im building the head of my motor an im going to be using the bottom end i have for now,it is a b18c1 with usdm itr pistons, i want to run @ a 55 shot of nitrous , will my bottom end be ok with some tuning,and or will one of those block gaurds help?any help please,thanx

 

if tuning is right, everything will be alright