I have been building my first turbo budget car for a couple of months now . I can say i am pretty impress with the fitment of the kit from On3Peformance so far. I am new to this turbo world. The Car is a 88 mustang gt with 95 cobra engine, it has Trick flow track heat intake, Comp cam, 215 Roush Heads, Stock T5, P-MAS, 60 lb Deka injectors, 340 Aeromotive in-tank fuel pump with a standard 70mm on3turbo kit. I'm almost done with my build and i would like some input on a couple of things. 1) what type of spark plugs to install and what gap should I use? 2)What type of Gears should I install 3.27? 3.55s? 3)from where do I Install my BOV and waste-gate vacuum lines ? Finally, has anyone heard of the Roush Heads i have ? I got them on eBay for 500 bucks but I have never heard of them or seen them other than the crate engines sold on the Roush website Thanks. Here are some pictures of my car: