The question is not about whether he can do it or not. In fact, there was no question about that. I was looking for proof that 20+psi on pump gas is possible (which I know it is). BTW...the CA18DET he is building is getting shotpeened rods, knife edged and polished crank, forged pistons, and overbored to 1.9 L. Also going to be running 720 cc injectors. 20 psi shouldn't be a problem on it.