Just rembered that they made a 1/72 version as well. Revell Germany(?) repackaged both kits too at one time.
A couple of differences between the kit and the 'final" Commanche is the addition of a Longbow radar on top of the main rotorhead (think a truncated teepee shape) and they put on two vertical winglets at either end of the horizontal tail, similar to the Little Birds. I haven't finished the Longbow yet, but here's a good idea of what the winglets look like:
