well my birthday is on Sept. 27. With the money i'm getting and some money i saved i'm going to be getting a greddy turbo timer, rear rotors, hks hi power cat back, and maybe an ashpec ecu or z1 ecu. i know where to get hks hi power catbacks but i don't know what place sells them cheapest? for those with hi power cat backs can you list where you got yours and how much was it shipped?

*if you don't want to type a lot just list out the store and how much it was shipped
example: z1 motorsports - $602.62 shipped