I just installed my UR pulley on Saturday. I used a two arm puller. It has a long center bolt that presses against the center while the outside pulls the pulley. If you use one similar to this be sure to put a bolt or something between the center of the crankshaft and the pulley so you don't strip the threads on the crankshaft.
One word of caution: it's a bitch to get off. The original pulley broke (chipped) on the sides trying to get it off. That pissed me off so I grabbed a thick towel, wrapped it around the pulley and with both feet against the car I yanked as hard as I could. Guess what? It worked. Anger does help sometimes but still be carfull. Also once I installed the UR pulley I had issues with the belt that goes around the alternator and water pump. It needs to be 42" long. I didn't have access to gates belts so they were cross referenced. I'll go get the brand / part #'s of the belts I used if you want them. Just send me a PM.
Hope this helps.
it's a bitch to get off 
