Ahhh....I think I remember now, I think I was thinking MassArt or something, I dunno....
I might be out near there (sort of, not really) Tuesday during the day to check out some parts, in Westford. I have to check my schedual and see if the parts are still available.
You know, it's your car, sad to say (No offense to '73 Barracuda owners!) it's a '73 Barracuda with a 318, not like '70 with a big block, I say do what you like but just be careful and do it the right way, IF there is a right way... not 100% sure how to do it. If it's a car you always wanted, go for it.
I know I can' afford a convertible E-body. Someone on Ebay sold a '72 Challenger that they cut the roof off of several months ago, had the same idea as you did. Would make a nice cruiser.
In Lynn yesterday there was an auction a couple of friends went to. There was a '72 Challenger R/T convertible for sale, Plum Crazy, white interior, got as high as $41K but the seller wanted atleast $45K.
Too much $$$ for me!