We spend a lot of time staring at our new engine, its not difficult because the stand is in the middle of the living room (Bruce did a really good job).
It is a GEN 3 with an early front cover on it to allow for the lower front engine mounts.
If the water pump were removed and a plate were installed in between the pump and the front cover you could have a substancial plate for upper mounts. There is enough space between the crank angle sensor housing and the front cover for a 1/2" think alum plate if one so desired. I was thinking this thick in order to machine in cups for some rubber mounts at an angle. Then an e-shaft pully with the same thickness offset as the plate thickness is made. The geometry appears to give a nicely distributed load.
Ken's mount inspired me.
...Chrissi

You could also move the crank angle sensor to the auto TX flex plate.

Are you sure that 1/2 inch plate and single top front cover 10 mm bolt will take 
a six G drop in or pull up? Given a 200 pound engine plus PSRU, prop, starter etc.
would have about an 1800 foot pound moment about the plate.

That is why I like the rubber bushings closer to the engine package
CG.

I would brace the top of the plate to the rest of the engine somehow.

Paul Lamar

 
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