I have no experience with the kits. Plenty of threads on them over on the Team Camaro site.
Do you have welding and fab skills? If not, then a kit is for you. If you do have welding and fab skills, and want to do it a little cheaper (but more of your time in labor), there is an alternative, and you will have better brakes than the kits.
http://www.camaros.net/forums/16-bra...e-upgrade.html