does anybody know if a headers of a 302 5.0L Mustang will fit a 302 5.0L Ford F-150.

 

They should bolt up on the heads perfectly, but do not expect the headers to match where your existing Y pipe is on your F150. There are many manufacturers that make headers for your application, so there really is no reason not to buy an application specific set.

 

I am looking at a pair of shorties from a Mustang. I got straight pipes with glass pacs on my 79 F100. Wondering if they will fit my application or not

 

Same thing I told the first guy, applies. It will bolt up, but dont expect the header end to mate with your existing exhaust system.