Hello ...I'm new here and hope there some Ossa guys out there to help . I have two SDR's one is a 73 and the other is a 75 , I have taken them both down to the frame , neither one is complete and I want to restore one as close to original as I can using the best of the parts and restore the second to be a rider or part out , depending how much is left to work with. My question at this point is which one to restore or which one is the more desirsable of the two . I also have a 72 pioneer as an organ donor but I don't see much in the way of parts that are interchangeable .I rode Bultaco back in the 70's, Alpina and Pursang I had some friends with Ossa but never owned one .Thanks for looking