"the shift kit not only will increase the quickness of your shifts, it is more preventive maintenance than anything."

I beg to differ. Even though you have read that it will reduce heat and all that a snappier shift will hurt other parts than just your internal parts on the tranny. Every mechanic ive talked to, both regular mechanic and tranny specialist has said "you will break things if you get a shift kit." The things they're talking about are, final drive gears and the differential. Go outside in your car and between every shift let off the gas then slam it. Snappy huh? Well, do that long enough and shit starts to break. Im testament to the fact that a differential can't last that long. Ive blown mine up and now ive blown up a clutchpack. So just be careful getting a shift kit. I know they're good and what not but - like putting a lot of power to an AWD or MT, start powering up that engine and then pop that clutch without an upgraded drivetrain system. See ya drive train!

Get what I'm saying? There are things down the line from the tranny that will be effect. ie final drive gears, differential and maybe even axles.

Joseph