Thanks for the replies.
I went to look at the Top Banana/Lemon Twist #s matching 71 - 340 today, and it was pretty far gone. Had a fist sized hole in the crowl below the windshield on the drivers side, and everything underneath was in sad shape, with metal actually bubbling off, not just rusting. I've been told it could be rebuilt by someone I trust, for a sizable amount of money and time, so it was a mess. Keep on lookin'.