Previously UN-beknownst to me but the 60HP power head gasket and 75HP power head gasket are different. The Only difference is the location of the cooling hole that allows the water to circulate up into the motor. Imagine my surprise and chagrin when I fired up the Scott and the motor started overheating.
After a complete re-tear down, I found the culprit. Here is the the 75 HP gasket on my 60Hp base see the hole location in the gasket? The second pic shows the base.
The new main seal (in the pic above on the right lower) just presses into the cap. Then you can reassemble it and go boating!