right now i got a 2wd 4.6l with a 2"body and a 2" leveling kit. i have 35 inch tires but they are rubbing a little bit and i just ordered coil springs that will add 4inches and new leaf springs that will add 4. i was reading on the internet and someone said i might need to replace my control arms. is this true?

 

Yep. 2 or 2.5 inches is as tall as you can go with coilsprings or spacers without getting new upper control arms.