Hi Lee,
It's funny but I'm going through the same thing myself. I pulled my 216 out of my 50 Deluxe and putting in a 250 of a 70 camaro. My problem now is finding the right mounts. I would like to know if the mounting plate on the front of the 216 will mount onto the 250. Does anyone knows?

Thank you for those who take the time to help and provide advice!
A classic car enthusiest!