I need help figuring how to set up a turbo on my 300zx and the items I need
 

I want to turbo my 1987 300zx I already have a turbo , intercooler , oil cooler , piping , some lines I just wouldering what all els would I need and how much would it cost to get those parts and putting them on and tune it. Also it’s a stock engine how much boost would be safe to use but still get good power. Last thing what supporting mods should I do after I turbo it to make more power and be able to use it and how much those will cost that’s it thank you.

Go here and do some reading
Z31 Motor Swaps