I've read posts on here saying that bbk throttle bodies weren't the greatest and that accufab is the way to go. I'm basically wanting to get some recommendations for a good setup for my fox. I didn't build mine, but I have pretty much verified everything on the motor. It is a 347 stroker with trick flow stage 3 cam and heads, holley systemax 2 intake w/ spacer, 42lb injectors, crane 1.7 rockers, 75 mm maf and 70 mm bbk throttle body, and an aeromotive adjustable fuel regulator. It runs like a bat out of hell, but I have seen more mild builds with bigger throttle bodies. Is this something that I should experiment with, or just leave it be? I'm always looking for more power, but will it be a noticeable 300 dollar add on if I go with a 75 or 80 mm accufab? I would probably need to port out the intake to the throttle body size too, right? I read that it is 75 mm on the holley systemax. Thanks for any help guys!