I was wondering how much power can the stock internals in the 1jzgte engine handle with out problems. Becuz im considering getting one and wanted to get the most power out of it stock as i can.... well i mean stock internals atleast. im planning to a big single turbo upgrade an larger injectors an some tunning and was hoping to get atleast 550 rwhp... just want to knw is that is possible with the 1j's internals without having to do a piston swap or anything....