hey guys. i have a 330 hp 355 with flat top pistons and 64cc heads. im guessing about 9:1 cp. its a 70s block. anyway i am making plans to supercharge in the future. it has hyper pistons in it and its a daily driver so i dont want to go over 9 psi. im guessing that this will send me over the 10:1 cp mark and i really dont want to go past the 9s. i dont want to tear down a perfectly good motor to swap to dished pistons, so i was going to rely on water injection! its cheap and it sounds awesome but i just need to know essentially how much it will lower my compression. if anyone has some good links so i can read up on it, or if anyone would like to share theyre knowledge, your help is appreciated!