v-6 in early A-body
I have done that, not quite an A body, but I took a carbureted 3.9L V-6 from a 1986 Dakota (last year for carb) and installed it in a 1941 Dodge half ton pickup. The found a used A-904 transmission from a 1978 Aspen, and it bolted right up. Makes a good driver and gets good mileage. Lots of V-6 engines out there since they replaced the slant six.