Leave the rocker arms off and bolt two pieces of angle iron directly to the cylinder head. That's a 3/8-16 thread, and there will be little if any side load on the bolts. A jackscrew leveler like the one in the photo above is a very good idea for leveling the engine as it approaches the mounts.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!