Dylan, I'm curious what you decided to do with your 68 convertible? Did you end up going with a Dynacorn body?
I'm in a similar position, although mine is a 350 convertible. I've replaced both quarters and tail pan. But now I want to replace the trunk pan and from what I've read online the tail pan needs to be removed to get the new trunk pan in (which i SHOULD have done at the same time but didn't). In addition, the floor pan needs some work as well. Whomever had this car before me did some questionable patch work so might be better to just replace the whole floor pan. Also the top inner cowl and upper dash have rot. I have most of the parts (purchased from Classic Industries) so it's mainly the labor I'm concerned with. I have a young child so spare time is valuable and hard to come by these days so I'm debating to farm out the work, or just bite the bullet and buy a completely new body from Dynacorn or similar and then transfer the VIN.