I've been on the phone with Summit Racing, Jegs, and Mancini, the last number given to me is to a transmission company AandA Trans in Indiana. They're closed today, but plan on calling Monday. On eBay, I've found a few 42's but they say Jeep and 80-up Mopar trans, I'm searching now for differences in those parts. A and A Trans number is 317-831-3066.