RBS has a used one in stock to save the racer a few bucks. These are made from billet alum. and have proper length bolts to go with them.
Coupler spacer is .695" thick which is perfect for a retro blower with a 2.00" thick front bearing plate.
Register on the gear is 1.250".
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.