When I used a cast iron Chevy V8 bellhousing on my engine dyno, we had to cut part of the the corner off of it that mounted the 3-bolt starter to make a block-mount starter fit. The aluminum bell housing with the built-in starter clearance didn't look sturdy enough to handle the torque load the dyno was capable of exerting on the housing.
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!