FASCINATING!

This is amazing! How many ways did M-E-L engineer the way to mount an engine?

I just opened my 58 MERC manual and see what you are describing. It appears the open end of the V goes to the block as it has two mounting holes and the other end to the frame mounts as it has one stud.

The photo I showed is supposed to be a 58 MERC. I am now wondering if someone put an early FE mount(s) on the engine in the photo?

BTW- The mount that you have appears to be much stronger.

Have you read the thread on mounting pad location? Is there any possibility of a picture of your installation?