Which Tremec TKX Do I Get

Yes the same as my 2012 Challenger R/T 6 spd, with a 2.97 first and 3.92 rear gear(11.64) and even that first gear is to high when stuck in traffic. When drag racing with a stick car you want your starting line(first gear) ratio to be between 13.0 and 15.0 for best launch and 60 foot. I run a 3.04 first and a 4.10 rear in my Dart which is a 12.46 first, I am slipping the clutch at this ratio more than I should to put down 1.50 60's. The Dart would work better with a 4.30 rear gear(13.07 first) and put the engine right around 6500 rpms in the traps(some day the 4.30 will go in), hell it's only another 160 rpm at 65.