RTG,
I have a 69 , non orig engine , WAS a 350 car , now a 400, also 'badged' as a 400 except for the front bumper emblem....I paid $8 k for it 7 yrs ago, but have put another $16-17k in it...I`d not go under $20 k if I sold mine...I`d offer it for more ,but if I couldnt get 20, I`d not sell it period...

I had it re-painted 6 yrs ago....some people say it looks great, I think its "ok", but as always I know my "blemishes", as others may not see...
in my opinion (for whatever its worth)....I think $20 k would be ok for a non matching ,good looking convertible....have seen them sold for that too...

others may have a different opinion, but thats mine...