Hoping someone can help out with recommendation for replacing the carb on my father in law's 74 challenger. Car only gets driven a few days out of the year (if that) and runs super rough, mechanic buddy said the carb is toasted. It had a 318 motor from factory but was engine swapped by PO in the 90s to a 383 B motor with hooker headers. Carb on it right now is a Carter TQ 9243S looking like its from a '80 318 when I run the number, intake manifold is from a 400 casting 3830949-F with build date 6.7.77. Been trying to find a rebuilt 9243S tq but can't seem to find anything online, what else would work? Or better yet what would work better? Any help is very very appreciated.