I decided to put new gears in my AMC Model 15 axle but can't find anyone that makes them. Lots of gears for the Model 20 axle though so it looks like I need to find one. Since AMC has been out of business for over 20 years and many AMC cars have been crushed, what are the best models to look for? I expect most Gremlins, Hornets, Spirits, and Concords were built with six cylinder engines. In fact, in looking through salvage yards I never saw a V-8 engine in any of these cars. So, what do I need to look for? I have a garage all ready to do the work but they couldn't find any gears either. Help!