I just placed an order for a used set of 8.75 ,489 ring and pinion set from Drive Train Specialist for $75.00 these were 4.30 gears but they are showing other sets from 2.76 to 4.56 for all three third members. They are limited on some sets for the 42 and 41 though. Here's the link.
http://www.drivetrainspecialists.com...ts/used-randp/
deman360
http://www.drivetrainspecialists.com...ts/used-randp/
deman360