I have the Xcharger Xtreme, 8.8 with 3.55's, Shaftmasters 4" aluminum driveshaft, HotPart LCA's and adjustable UCA, UMI relocation brackets and the FRPP springs on the rear. Runw with 15" Jeg's wheels and Mickey Thompson 275 - 50 x 15 ET Street radials and some skinnies up front. FRPP X pipe to GTA mufflers.
Best is 12.6 - It has been running a pretty consistent 12.8 and this weekend with 201,000 miles on the car and the stock 17" Bullitt wheels up front (skinnies wouldn't fit with the new brakes, rotors must be shallower in the hat so the calipers rubbed) I ran 12.9 at 106.