Hello Brett.
I bought an Old FP Red (internally Gated) with a 8cm Housing 3 years ago. This Turbo is rated at 65lbs/min. This is probably the best Turbo I ever bought. It has a little Lag but I use ECMLink to control Boost; the thing push Air pretty good.
I see 20 psi by 5000rpm and 62lbs/min and 32psi by 7500rpm.
Go FP or go home!!!
Ghislain