I plan on 550-600whp for the future, long term goals ofc, but before I get started I wanna fix all the weak spotsIt (They) can take anything you will throw at it. Realistically most modders wont add that much.
What could possible fail would be your single rear differential bushings bolt. Simple cheap fixes though.
Add the fourth bushing and buy 3.8's forged bushing bolts with squared Allen heads.