Ok dude, I hate you already... But I will take the time to explane some of the things I have learned about honda motors. When you have a VERRY HI CR <----- That stands for Compression Ratio, the motor NOT ONLY compress at a higher velocity/presure it also sucks in MORE fuel on the down stroke... Putting 12 5:1 comp pistons will do almost nothing for me without more fuel. Were are you from? I want to make sure not to got there ( Guys like myself would end up in jail over der)