Dukerc51
Ok, I found two cards on e-bay. One is listed at $149 and the other is listed at $90 both $20 shipping from same seller. This may be a cheaper option than P&S if you want to take a chance.
Dynapath Bendix Circuit Board 3737298 H 3737298 H SN 1308 LMS Mona | eBay
Dynapath Bendix Circuit Board 3737298 G 3737298 G SN 812 LMS Mona | eBay
I found an extender card but it was too expensive for my taste.
John