What would you do?

The 318 was Mopar's lowest warranty claim engine, better than the leaning tower of power slant. Your car is gorgeous. If you're happy with it, than it's all good. If you feel the need for a 360, then build a seperate motor from scratch, but keep your happy teen. That's a real cool driver for taking the grand children for ice cream and a drive with the windows down. Just my 2 cents from an old man. Paul.