Bolt Pattern on Damper/Crank Pulley

Is the bolt pattern the same on a small block and a hemi crank pulley?
Reason, I bought a damper from Innovators West based on the advice here to get the best I could considering stroker changes everything etc. I found CFV crank pulley that's the right height or offset, but they only offer it in a "performance" diameter, under driving the w/p and fan, causing overheat problems.
Mancini has a 69-71 hemi crank pulley that looks like it will get me within 1/16 of where I need and a w/p spacer that should get me back to jake