What is the maximum HP on a stock 91 Turbo
 

I would greatly appreciate it if someone could shed some light on this subject...I just want to know how much HP you can get out of the stock turbo.

i would guestimate that the most rwhp you will get with the stock GTX turbo is in the neighborhood 250, and thats with a pretty nice street port... now, if you go bridge port, who freaking knows... and if you do go bridge port, its time for another turbo anyhow :D