A white interior is required, these blue interiors didn't fare well with the environment
Actually, my Mopar club associates discovered that black holds up best, in the long run. In the later '80s, pre-resto-parts available . . . all of the plastic E-body door panels in white would flake/bread if you touched them. The black ones didn't. Seems that the black plastic has a UV ray absorber (or it's just the color itself), but other colors don't. "Clear" has the poorest durability when out in the sun, by observation. At least in molded plastics.
I like the outside color. A blue interior would be different. With a white one, you'd need sunglasses in the summer, with the top down, due to all of the white reflectivity. A black interior would work, too, as the black would evaporate out any moisture which might accrue from "leaks" or such.
I concur that the car needs to be saved, if possible, due to its low prod numbers and such (or ANY Mopar convertible, for that matter!). I suspect it would take a parts car to do it, too. Rusty footwells are probably there. What about other inner structures that are normally protected in a hardtop? The drivetrain could probably be re-vived and work decently while everything else is being done? But the ONLY way to do it is to do it right, up front, rather than patching something to do it over later (do it right the second time). This would probably take two things . . . an underlying love of that model and year of 300 and about $100K to spend by the time it's over. Hopefully, a good bit would be left in the bank, but some things will be expensive to find and refurbish. We also know how some "estimates" need to be doubled in time spent and money spent.
It'll be a nice car when it's re-done correctly, but it's going to have to trip some triggers.
I feel my money would be better spent on a '66 Crown convertible. That was the first "collector" car I wanted to buy, back when, but parts availability and basic car pricing (1978 time frame) made me look elsewhere. I still like the look of that series of Imperial, though.
CBODY67