[foxbodyfrankie5]

hey guys, im new to having a stang, anyway 91 lx 5.0 and im gonna get a new intake manifold and t/b for it, but the intake manifold i want only has one with a 75mm t/b opening, was wondering if i was able to only get a 70mm t/b and have it fit, do they make spacers or adapters for that?....and one more thing, when is it necessary to get a bigger Maf??....after a bigger t/b??.headers?

[phillystangman]

what kind of intake? are you doing the upper and lower?

[LimitedE]

You should be good if the manifold opening is bigger than your throttle body. Just don't get it the other way around. I took my 75mm Professional Products throttle body off Sunday for the first time since I bought the car, just to see if I could fix the sticking problem and found that the "lip" that the stock manifold leaves at it's smaller opening makes upgrading to a bigger throttle body almost pointless.
After spending a couple hours opening it up with a Dremel and polishing the opening, I could literally feel a difference in the top end.

But anyway which ones will you be using??

[foxbodyfrankie5]

i want a trickflow upper and lower, with a 70mm t/b instead of 75....