I drove a 66 Coronet 440 with a 440 in it for two seasons while my Bee was tore apart for restoration. It was a CA car and pretty fun to do burnouts it. 3:91 gears.
440 powered the car quite well. Other than this I have no input.
KID
Another reason for its purchase. Giving the Bee some down time for some much needed metal work, interior work, engine touch ups(and possible upgrades). The thought was to put the 512 in the '66 and do some work to the Bee. But that may be a bad idea, as I don't think I have a rotisserie restoration in me, and I don't want it down for 10 years while I piece it back together. Plus taking a car apart I can hit the key and run down the road in seems like a bad idea to me.