'65 Cuda - 273 rebuild or swap?

The cost to machine the existing 273, if needed even, would probably double maybe even near triple, the cost of a junkyard RUNNING 360 that you can just slap some heads on with a mild cam. If I were to do it all over again, I'd buy/rebuild a 360 bored out and cammed over the 318 that I did the same thing to.