there's a guy on ebay that has TONS of transgo shift kits, I got mine for my 4L60E for about 80 bucks. He has a ton of other parts too. I haven't installed it yet, haven't had time and kinda don't wanna do it myself. But it looks like a really good kit. This guy was great to do business with too...here's his ebay store
http://stores.ebay.com/Oregon-Perfor...toreviewQQtZkm It may be confusing looking for it if you have no idea, so just shoot him an email and he'll help ya out. I also recommend the Corvette 1-2 servo to upgrade your 4L60E. I haven't done it but I've heard tons of good things. And everything can be done with the tranny in the car. Good luck