I'll be honest with ya, I don't know. I scored them off of an ex racer who was getting out of the sport. His wife was making him sell all of his racing stuff and clear out his garage/shop. I'm selling them for less than I paid. Is there any way to tell if they are indeed HD's? I don't have anything stock to compare it to. I would probably put my money on stockers that were cryo treated. I bought them as spares. But whos know what kind of budget this guy had, they may or may not be cryo'd HD's.
If anyone out there knows how I can tell if they are standard of HD that would be awesome! Also, is there a difference in splin count from the 3 spd. to the c4 for the input? And as for the outputs, I know there is a different tooth count, as the gearing was different between the two cases, but does anyone know how many teeth are on each for each case? Thanks alot guys!