Hank I used the flat crank pulley that almost touches the Damper. I actually used a Trans Am pulley and had to redrill it to a three bolt pattern from a four. I had it laying around, chev uses the same offset pulley that is a direct bolt up. If you are running a small dia damper you might be able to mount it backwards over top of the damper but I never tried that because I like the larger damper, it smoothes out the cam a little and makes things last longer I believe.
