Stage kits are all talk. People sale stages to bank money of the purchaser. Companys come out with power stages as to sell you what you need. Others will put something "stage" as to let you know what Level its ranked at. ie: stage 2 clutch.

Best bet is to check the local forums for your platform and talk it up and gain some know how. Then apply that. Good luck. You need anything hit me up. I might know some people who know some people, who --- well you get it.