Yes you will run into balancing issues If you run the 250 dampener On the 292. The factory Motors are not as well Balanced as one mit think. Meaning Not as well balanced as a Newly Rebuilt motor. So it is in your Best interest to stay with the 292 And find The right parts ie. brackets pullys and so on.

Larry/Twisted6
[oooooo] smile
Adding CFM adds boost smile
shocked God doesn't like ugly.