I just bought one of those cheap chinese TC's and had issues with aligning the pulleys and running out of crankshaft. I did get it to work but am gonna have to make an extension for crank.
There's a guy in morrisonville,Il that has tons of parts for 3 wheelers. I just bought some parts from him last week and he a good guy to deal with. Just check on craigslist that how I found him.