I am apparently going to have to pull the jugs off this '82 LS and un-stick the piston rings so I started putting my shopping list together for all of the pieces-parts I was going to need. I decided to try
http://www.flugelnus.com/ as their prices seemed fairly reasonable. I e-mailed them the list of parts and although they responded quickly no cigar. They didn't have any of the r65 specific items and in followup e-mails I got them to admit, "To be honest we don't stock a lot of r65 stuff for the simple reason of there just are not that many."
They do have an aftermarket H4 reflector and lens assembly for $60 that they say fits /5 and R65 models so I may give that a try.