Ive been looking at ways to get more hp. Was looking at N2O but am now looking at getting a turbo. Ive been looking at the turbo kits, are these kits everything you need for a stock engine? Theres a few on line around $2500-3500 for up to 8psi if I remember correctly. If I bought one of these kits would it simply bolt on? Is this the best option to go or is there a less expensive route that will still work fine with a stock engine (apart from cat back exhaust, air intake and a vafc which will be tuned when I get the turbo)