ok i have posted a pic of my jeep on here before got a few things i want ot ask first i am thinking about lifting it with a set of 20"s and a 2 inch lift what is the biggest tire and can throw under my limited and what kind of gas milage would i be looking at for my 5.7. Also im building the motor too right now just intake and flowmaster muffler but im lookin at heads, cam i just bought a diablo and an exhaust very similar to 555ctsv but out the back instead of the sides. i just got some srt manifolds and ill get some hi flow cats. guy run flowmaster 40 series mufflers for it. but thats heads and cam should i get i am lookin at inertia motorsports for there heads and a crazy spartan cam but does anyone recommend anyhting else i really want to lay down some good power