I never figured this out. Back in 2008 when I had my 2005 Hemi Ram single cab short bed 4X4. All I had was a cherry bomb extreme muffler, Hankook Dynapro M/T's on the back, and a K&N filter on it. I took it to the track and on the first run it spun alot and ran a 15.1. The next time i heated them up to far and had to back up and took off in reverse (made an ass of myself). The last run i made I ended up running a 13.6@104
! I dont know how in the hell i did??? I would post the timeslips on here but I dont have them anymore.