I may have missed it somewhere, but what if any internal mods do you done to the motor and how many PSI do you think STOCK internals will hold reliably with your turbo?

I am planning on turboing my 91 but wont be running alot of boost. I dont want to make alot of power, I just miss the sounds of a turbo since selling my turboed Probe GT and since I cant buy another one right now I figured I may just throw a turbo on the truck.