Yah, the front carb is for a 1958 with the passing gear switch mounted on the side. PLUS, they both have chokes. I bought the same set-up for $400 about a year ago... I asked if they had any parts, they brought out a box with the rear matching number carb. The throttle plates were frozen, so they attemped to drill them out, but fudged the carb all up. It may still be rebuildable.. i figure that an original 2x4 manifold is still wirth the $400 since they stopped making the factory manifolds 40+ years ago...
