Dowels aren't forever- - - -they can be removed and replaced with short plugs to prevent oil leaks. If the bolt pattern, flywheel diameter, and ring gear tooth count matches up the flywheel should bolt on and work, but you might have to make your own timing marks when you assemble the engine. That's a simple process of finding top dead center and using a degree wheel to locate where to put advance/retard markings on either the flywheel or the front pulley. Parts don't care where they're put, as long as the guy installing them is a little bit smarter than the part he's installing.
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!