What is the diameter on the stock crank pulley, as opposed to an underdrive pulley? I'm thinking about getting UD's (when I get money again) and want to make sure it doesn't already have them. This almost happened with the airfoil. I was going to buy one and when I did the TB bypass I found one already in there. Apparantely the guy I bought it from forgot about some of the mods he did.

 

Surely someone knows?