I pulled off the crankshaft balancer on a 2000 5.3 liter vortec in a suburban because it was damaged at the junkyard and I am wondering why there if no keyway in it. no slot whatsoever. Does anyone know if the balancer is just pressed and held on only by the new stretch bolt? It is becoming hard to find a balancer installer for this engine. the threads are resest in so far. where is the best place to find a tool to press it on. napa and others try selling me tools that will not work. I basically just need a long metric bolt but I am so far unable to find one. any help would be very kind. I will get it eventually on my own but I don't understand why it is so strange compared to older vehicles with woodruff keyways that could be put on with the old bolt.