Thinking about buying 500WHP MKIV - Need Advice

[GhosttV26]

Hi guys, I'm new here.

I'm thinking about purchasing a 500WHP single turbo Supra MKIV. It is tuned to 1 BAR (Aprox. 16 PSI) of boost and has the capability of 2 BAR. I'm wondering what kind of maintenance costs I can expect for the powertrain. I have no idea if the owner installed upgraded internals or just new stock ones so assuming the internals are new/stock, would they be able to handle 16 PSI of boost ok or would it be sketch? If a piston rod were to break, how much would it cost best-worst case scenario? Is the stock powertrain capable of handling 500WHP reliably? What modifications should I be sure to have on the car to increase reliablity?

It would be very helpful if current or past high HP Supra owners could tell me what kind of problems they have had and how much it cost them to correct the problems or just what mods they have on their 2jze-gte and how reliable it has been.

The more you can tell me the better!

Thank you!

-Ghosttv26