I went with a Cloyes Double Roller with straight up and 4° +/- keyways. I don't know if yours has the seperator plates in the water pump housing but if it does I would make sure they aren't rusted away (like mine were). Also look for weak spots/pitting in the timing cover where the water passages are. Felpro makes a nice timing cover gasket kit with everything you need to replace the old gaskets on the front of the engine. It would be a good time to replace the water pump if it's old.
