If you cant tell this is my first post. I have a 2003 F-150 supercrew with the 4.6 in it. I have done a 3/4 drop with 20 inch wheels and flowmaster exhaust dumped. I am looking at putting the summit short headers. do i need anything else for these to work and do they bolt up to the stock exhaust. and does anyone remove 2 of the four cats.

 

only post in 1 forum. I replied to your other post.