I own a Trick Flow intake on my '88 and it is a 75 mm opening, I went with a 75mm BBK/Edelbrock throttle body and spacer, and went with a Pro-Flow MAF meter to keep everything 75 mm and the thing is very responsive. I have owned a 65 mm throttle body (by Motorsport) and I didn't notice any difference in throttle response between the two other than I make more power with the bigger opening. I also have EEC IV mass air, Edelbrock aluminum heads with a 1.90 intake/1.60 exhaust, long tube headers and a Comp Cam and the thing screams! Jeff
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