just ordered a newtakeoff.com complete rear assembly, they mentioned something about the pinion angle needing to be set. my car has not been lowered and uses stock tires and ride height. is this necessary for my application or is this a direct bolt in with what I have.

 

No. Just swap it right in.

 

if its the same rear end, and same mounting locations for the control arms. the pinion angle will not change.