Empi does suck I had the same problem. Get a Berg pulley. The heavy one. not only does it work it helps take vibration out of the crank. I'm done with all those cheap crap parts too.  Berg is dead on accurate with their stuff. Oh I here stock is good too,sum ole feller said so. :lol:

chrome ads 10 moore hp  and loud pipes ad 15 if i could just figure out a wing i would have it made.

I've run a rusty, slightly warped stock pulley for years with no problems.  On top of all the problems with overheating and timing marks letsbuggy mentioned, every time I've ran a cheap (but super good looking) aftermarket pulley, the engine has poured oil out around the pulley.  I suppose that if I had a "show" car, I would spend the money on a Berg pulley . . . all the performance of stock . . . plus good looks.  Until then, I'll keep pulling 30+ year old stock pulleys out of other people's junk piles and running them.  

If you come over this week I will revel the mystery of the timing marks on all the original pulleys. You can draw them on something to remember so you won't burn up what brain cells you have left. This is something you really need to know if you are working on someone else's engine. Trust me .