Thanks for the info. I did see at least one allen-head bolt. The pulley didn't wobble or anything and I could turn any of the pulley's by hand. I guess at this point, the worst case would be the grooves in the crank are stripped out and new keys wouldn't hold. I'll be back with updates.
One other think, from reading other posts, do I understand correctly, I could replace the front main seal fairly easily if I'm pulling the radiator, crank pulley and harmonic balancer?