When I purchased my Trick Flow intake the guy threw in a BBK 75mm TB, I just wondering if this is too big and should I try to trade it for a 70mm? Right now my car is pretty much stock except a Flowmaster catback, however I have a cold air intake, Trick flow U/L intake manifold and 3.73 gears that will be put on soon. My future plans include headers and H-pipe w/ hi-flow cats in the next month. Later on I plan to add an e303 cam and TF TW aluminum heads and eventually add a vortech if I don't run out of money first! hehe! I see alot of guys making 400-500hp using a 70mm TB, and I'm sure that the 75mm will work but I also wanna make sure I have good throttle response. Any help is welcome!