who makes good longtubes for a 99 5.4 f150. how much are they and how much aprox. hp will i get from them. i have a flowmaster cat back and drop in filter right now and i'm looking for some more bolt ons. i was thinking of going with a custom tune and maybe efans also. i'm open to suggestions on which boltons i should get. thanks

 

This is the best! But a little pricy.
http://www.secureperformanceorder.co...ProductID=6911

Phil