Brad,
If you can't find something there, I'll get one here and test it on my car first, then bring it to Carlisle. You should be able to use one from any Mopar with electronic ignition since you went MSD. That means 73 on up in your search.
It seems less than $20 for one model, or $40 something if you want a year warranty. The cheapie($18) I bought was the night before Carlisle 2006, and is still going strong. I don't recall where it was made though.
Mike