I have an h50 that came on my mtd when I first started to put some bikes and parts together, I put it on a shelf and didnt have any plans for it until I picked up a couple of digger frames, I see that they came with h50s on them so I'm hoping that this is a good candidate for one of the frames, not sure about the year 79-89? any suggestions? thanks h50-65403S 9191R