i have never bought one of those kits because the diy is just as effective if its done right ,im not knocking anyone that has the kit because its nice and as mentioened has al lthe goodies ,personaly i just cant justify 30 bucks plus shipping on something yo u can do for free in an hour yourself .biggest thing is however you choose to do it just get it blocked as soon as possible ,the oem pump is a very dated archaic design and doesnt work very well like they do on sleds .it changes the ratio wildly often plugging up and failing at high rpms and seizing a good topend from lack of lubrication