My dad just picked up a 99 F150 with a 4.6L, he's thinking of going with a JLT RAI and I'm going to give him my MagnaFlow mufflers off my 00 Mustang GT, he's looking for gas mileage not necessarily performance.
What would you guys recommend? Also, will the MagnaFlow's work off my Mustang on his truck?
What would you guys recommend? Also, will the MagnaFlow's work off my Mustang on his truck?
