A lot of people had their RAM starters updated to the later type. Maybe someone out there has a good original one that was removed from their engine that they'd be willing to sell you. I had one but unfortunately, for you, I sold it several months ago for $25. Maybe Carlos has an old one he took off a customer's engine that he could sell you.

The other option is to buy the newer X style front cover, starter motor & bendix, and compressor nut and update it yourself. It should bolt right on and no balancing or machining should be required. I'd suggest calling Carlos to see if he's be willing to sell you the parts. Another option is to get the parts from Modellbau USA.

http://www.modellbau-usa.com/catalog/index.php
Click on "Turbine Spare Parts". Looks like it would cost about $200 for the parts. If you told them what you wanted to do they could make sure that you got all of the right parts.

Joe