They're great kits, easy to install and very effective, I've installed a few for friends and liked the results. One thing though, what kind of shape is your tranny in? If it's got some serious miles on it you should probably rebuild and re-adjust it before installing the kit. New bands usually compliment a shift kit well.
__________________
1981 D150 5.2L auto
Next up: Body work
Check my gallery and my youtube channel to watch my progress.