[vcf-midatlantic] Looking for Tandy 1000 EX HX computer / parts

I have a 1000HX I recently picked up on Craigs and have a few upgrades waiting for parts to expand. Sadly, the case is cracked pretty notably and I'm looking to replace the case. But, what I am most looking for is the proprietary Tandy "PLUS" RAM expansion board for the EX or HX. Does anyone have anything along these lines? Thanks. bp -- Heisenberg may have slept here.