Stock Throttle Body Size?

[jthubert]

I have an 05 Mustang V6 Coupe and I was just wondering what the stock throttle body size was? And I was looking at americanmuscle.com and they have a 70mm BBK for like 350ish if I remember right. I don't really know much about cars but I know the larger throttle body + a cool air intake = quicker acceleration right? Just wondering if this upgrade was even worth it.