I was just made aware that headers and exhaust may turn Out to a major issue when putting a 5.3 into where a 4.2 was. I have a used 5.3 i pulled Out of a bravada i intend on putting into my envoy but was told that i may have trouble finding headers that will squeeze to fit? Does anyone have any knowledge of this issue? Any Help would be greatly appreciated!
Semper Fidelis,
Aaron Jefferson
Semper Fidelis,
Aaron Jefferson