The 250 balancer can be adapted, but it needs the same shortening of the snout and cutting the seal surface back the same distance as the 6" diameter small block V8 balancer does. The hub has to be shortened about 1/4" or a little more to make the belt grooves line up properly. It's a fairly simple conversion for anyone with a lathe.
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!