This forum's OEM Parts and ebay are possible sources for your parts:
Blower assy:
eBay Motors: 91-95 acura legend OEM ac heating blower motor CHEAP (item 200222726475 end time May-15-08 13:53:37 PDT)
(hondapartsunlimited is a good source on eBay, I've bought a few parts and they've been good so far)
Also looks like moistical has a transistor on eBay and I've got the one above for $30 shipped too.
Good luck with the repairs.