Post a pic of the car, Mark!
I had a car matching that description and it sold to a guy in Canada. (or, is your car green?)
As for carb, I tried several on that car when I first got it. Put on a 600 Eddy that worked A1 on a 350hp 440, and the TNT didn't like it. (off-idle stumble that I couldn't adjust out)
Tried an Eddy 750, and it didn't like it either (same trouble). Had trouble with that 750 on another 440, then years later learned a bunch of folks had trouble with 750s, apparently/reportedly that carb had some issues, perhaps in the casting passages (somebody said). Some folks have documented their success with tweaking them into operation. But I gave up on the 750 and sold it. Anyway...
I don't remember what all I tried with the carb(s) tuning, but never any success, and I went thru the whole fuel system tank to pushrod, didn't see any glaring problems, and it never ran right until I had the original carb rebuilt by a pro. As soon as I put it on, that car right like new.
My 68 350hp 440, stock except for shorty headers and 2.5" X-pipe exhaust, likes the 800 EPS. That's the size I'd recommend for a TNT, a 600-650 seems a little small, or might need some extra fiddling to make it work.