My 1989 35-3 has a Universal M25XP mated to a HBW-50 transmission (that has failed). From reading all threads about this topic on this I am going with Twindisc tranmission to replace it (because it's cheap and good). But tried to figure out the exact model has been a challenge. I need to know the type of bell housing (SAE-5 or BorgWarner) and the forward and reverse gear ratios. Anyone have that info? Thanks in advance and to all the other other folks that have posted about this here.