Hey guys, Lets pretend I have a b20b4 block and a t3/t4 turbocharger. What head should I put on? b18 or b16? Im guessing the b18 Okay so lets say I have a stock b20b4 with a stock b18 head on it and I have a t3/t4 turbocharger on it can anyone guess what PSI I can daily drive at? and what Ill get 1/4 mile on that.. its going into a 5th gen civic coupe thanks guys.