But now you guys have got me worried about this pinion angle thing... Have people actually had problems with the Keisler kits because ov this?
You can have driveline angle problems with any mod you make, when you alter the cars original configuration in any regard to the driveline, and do not, or don't know how to alter/adjust for correct geometery of the related driveline componets you'll have problems, one of the problems with Keisler's early TKO installs was that the transmission case was very tall, so this put the driveline angle out of parallel with the rear pinion, you had 2 choices, mod the floor to correct the transmission angle (which most people don't want to do), or re-angle the rear pinion with MP rear leaf perch shims,...unfortunately most people are unaware on how to perform this task, or lack the equipment to set driveline angle
The New Keisler T45RS case is a much more symmetrical case, easier to tuck into the factory hump than the TKO
Currently you have quite a few choices in the market, Keisler, Hurst/Classic 5spd, McLeod's 5spd, Passon's, plus a host of other smaller companies, depending on your wallet/budget 
