Sounds like the only option would be a 2 piece Glenn, wouldn't want to die now would we. I know plenty of people still living with a one piece. I have had a one piece built by Ken Hastings Balancing Services, a place that builds proper tailshafts and balances them properly and has done for a very very long time and 1 piece was what they recommended going for. Haven't had an issue (and haven't died from it). Tell us why not Glenn