273 to 383 Formula S Barracuda

Hello everyone,

I was gifted from my Father-in-law a wrecked 67 273 formula S 4 speed Barracuda plus parts from his totaled 67 383 formula S 4 speed. I had the 383 engine rebuilt and one of the 4 speed transmissions is at Brewers for a rebuild too. The car is at a classic specialist in my area (Florida panhandle) for restoration. I am curious if my quick decision to use the 383 over the 273 was the right decision? It is a power brake/ power steering car and I want to do the same with the 383 but I am learning that this is a tall task in an A body. I also plan on adding A/C because Florida. Maybe Classic Air or something else. I read in 67 the BB cars were not offered in power steering and A/C. is this still an impossibility? This is the begining of a long and expensive journey.