I have a 2007 Ford F150 5.4 Liter. I am about to change my exhaust set up. I currently have a single inlet,dual outlet flowmaster 10. I am going to go with true duals with a X-pipe and dynomax bullet muffetrs with 4"x18" tips. And some magnaflow Hi-flow cats. I am wondering if I will have trouble with installing headers with this set up. Also, what is a good brand for headers? Thanks guys!

 

All y'all need ta knowed

Ol' Big D done did er gud!

https://www.f150online.com/forums/ex...hlight=headers

 

OBX long tubes. Either go long tube or save your money.