The 292 has the pulley grooves cast into the balancer, either 2 or 3 grooves, don't remember which. It's considerably larger and heavier than the 250, as I remember, so don't try to use your 250 balancer. You'll also need to reposition the right motor mount bracket on the frame, as the 292 uses a right mount in a different position than the 250. The extra power is worth the effort of making the swap, however!
Jerry
