I have a stock exhaust on my 99 F 150 4x4. I would like to put a magniflow muffler on it to give it a little mellower sound, but not too loud. Any suggestions?

What size are the pipes leading to and from the muffler?

 

check out magnaflow's site. thats the best way to start.

http://www.magnaflow.com/

 

18" Maggy

Read post seven.

 

14" Magnaflow, you'll love how it sounds compared to stock.