The price for the "power head" for a 46cc farm hand is $109.00
With free shipping...I just got one..the coil was bad, at least it wouldn't go sparky, sparky, was going to use the CH conversion anyway...motor was in great shape, with no scuffs or scores in the cylinder or piston..
If you stay with the flywheel, you'll need the prop adapter and the "Twister" manifold sold at CH as the motor comes with a flimsy rubber one...

Might want to look into that also..
BB1