I posted an ad awhile back regarding a 66 impala convertible i have. The frame is rusted bad and needs to be replaced.. I had asked if the frame of a droptop was the same as a convertible.. I had alot of reply by people who said they were the same except a couple different body mount.. well i found that is partly right.. but the frame rails are also 1" wider on a covertible.. so the frame won't work unless you reinforce the rails the length of the rockers... So FYI don't go saying that its the same except a few mounts, because its alot more involved then that...