Back in 1992 I actually met the guy who swore up and down that he had actually purchased Ford's last remanfucatured 292 that they had in stock (in the US, anyway). How much of that is true, I don't know, but the fella did run the shop at the Quantico Marine Corps Base. He put the engine in a 1955 F100. The "crate" engine he showed me did come with heads. At the time, I don't remember checking the heads numbers. C0AE and C1AE are close to being the same, I don't doubt that someone may have put those heads on there because that was what they had on the shelf at the time.
I once bought a 292 (A C2AE block whic of course means a 1962 block) that was remanufactured by a large engine company like Jasper. It was a long block so it included the heads. The heads on that engine were ECZ-G from late 1957. This was their last 292 as well... but they did a good job on this one. I put that engine in my father-in-law's car and it will burn the radial rubber TURNING A FORDOMATIC. Yep, no one believes it until they drive the 55 Club Sedan, but it does.
If it has been that long since remanufacture, i would tear into it and give it an inspection for sure. It will not hurt to freshen all those gaskets, check your tolerances with plastigage, etc. You stand to lose a whole lot more to lose by not doing that kind of work, for sure.
Daniel JessupLancaster, California
aka "The Hot Rod Reverend" 
check out the 1955 Ford Fairlane build at www.hotrodreverend.com