It should tell you it makes power with that set up with either type carbs
Real tire spinning power
I cut my hot rodding teeth on a 1934 Ford Pickup that had a stock 1955 Chrylser 331 hemi New Yorker motor in it when I bought it with a little bitty tiny pipes real restrictive dual exhaust system with stock exhaust manifolds, I changed all of those pieces later and had a really good time learning with that hot rod It ended up with 2.0 inch primary with 3.5 inch collectors headers with a home made insert mufflers and a dual AFB carb set up I was able to whup on most of the local factory hot rods including 360 HP Sting Rays and the 1966 375 HP Chevelles
BTW, I'm jealous of your Plymouth
Have fun, sorry for hijacking this thread