The 66-BB S Trim is what Jack put on my T. It takes a little to spool but it pulls to 6,000 RPM's with no problems. Ran a 6.55 in the 1/8th at BG off the foot brake. I do run more boost than you as 18 just seems a tad soft when you have been running 25-26 lbs on 93 and alky. You might want to keep a eye on those 60lb injectors if you turn the boost up. HiTech6