Re: Phat Shaft Turbo questions
The 62/70 and 62/80 are S300 turbo's also.
I'd go with the 62/70, it's journal, 38psi is normally what we see, and it's good for about 500rwhp with injectors. The 62/80 has slightly more lag and I've made 20rwhp more with it. The 62/70 is better for towing.
We step up to the Silver 64 after that. We usually make 570-580rwhp with 190-225cc injectors. It has lag, I don't recommend heavy towing, and it's a decent daily driver.