I started to make a flower pot or a boat anchor out of a 76 400 Mopar engine. It runs, and was okay but it was in a 70 Charger I bought. The previous owner did have the 440 that came out of the Charger which I'm building now and it will go back in the Charger. But........... I was told the 400 could be made into a pretty strong engine by installing a 440 crank & rods and going 0.30 over pistons. Any truth to this?