good luck. mine broke on my '81 and i thought..ok, no big deal..i'l just get another. wrong!! they just started making replacement repros and they run for over 100 bucks. i have looked at other chevy vanity mirrors, but so far haven't found one that matches.
at this time, i can find other things that need to be fixed or replaced with that 100 bucks.
and, you're right ...some one is getting rich making the repro mirrors!!!