So I have a 97cpupe ex with suspension work n catback exhaust with cat delete but I'm going to be installing my turbo in a couple of weeks so I was wondering if a stock internals could maybe hold 8psi and hopefully getting it tuned to reach 200hp or if not at least 6-8 psi at the range of 180-200hp if possible

 

That all depends on how healthy your motor is.

 

8psi on stock d16 you will be fine.

Talking about td04 turbo...

And i would change to ARP studs and Oem HG.

 

that is very relative to turbo selection which the OP never stated

 

True..