Three links for stuff I posted about the good old days of playing FASA trek back in the 80s:

1) My group back in 1985 did some tweaking of the rules for promotions and such:

2) I posted one of our home-made adventures, played around 1985-86, where our starfleet characters met some Star Wars characters, pre-WEG. Lightsaber, Force rules, conversion to FASA included:

3) Finally, posted my groups 1980s FASA Star Trek PC and NPC characters (actually posted for all systems we played, but the most are FASA..)