I am going to build a N/A B20B, I already know that I can use an ITR oil pump because I have checked that part numbers. witch means I already have it. lol. My question is this, can I use an ITR water pump? And if anyone knows anyone who has built the same thing let me know. I am going with Brian Crower cams and valves (etc.) cause thats all I can find for the B20 head. and do you guys think 11.5:1 will be okay for 93pump gas and daily driven? Thanks for your guys help.