I made my own puller. I used a piece of 1/2" plate steel, drilled 3 holes for the flywheel bolts, and one large hole in the center for a big fine thead bolt. I put a fine thread nut between the plate and the flywheel (was going to weld it there, but never got around to it...). Make sure you use the highest grade bolts you can get!
Tighten it down as tight as you can without breaking the bolts, give it a smack with a big hammer, then repeat. Sometimes if they don't come off right away, I'll leave pressure on it and let it sit overnight. This method hasn't failed me yet!