Hi. I'm parting out a 1986 VN750 and still have some parts left including a complete final drive unit. This was a working bike before I parted it out. The splines on the final drive probably aren't perfect, but the unit worked before the bike was parted out. If you've got a good or new coupler I wouldn't think you'd have any problems, but I can't guarantee the part as it is used. I can send pics if you're interested. I'd like to get $30 plus shipping. Thanks.