Loosely bolted together, and a big belt sander is the "easy button" method. Be sure the trued up intake counterbores still have enough clearance for the alignment rings, even if you have to shorten the ring height a little to keep them from bottoming out.
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!