I am looking for headers that will replace my stock manifolds without having to modify my exhaust to fit the new headers

 

If you have your heart set on headers....shorty headers will be the most accommodating to the rest of the stock exhaust. Do your home work, ask questions to the manufacture as to they hook back into the stock exhaust. Some may require some more modification? Some may not.

did you read through this>>>https://www.f150online.com/forums/ex...ust-guide.html