call Four stroke tech at 814-842-6159. they offered me a used(pulled rom a new engine to make a stroker) for $300. That was for crank with rods attached. I also talked with somone from artic cat, His name was Bruce Bondy, he sold me a used crank( much more used than new but within tolerances i guess, for 150 for crank and rods. Artic cat was very difficult to deal with. To buy a new crank and new rods it involves plastigaugeing (spell) wich is considerably more labor than the crank rod combo.
I would suggest calling mickey at FST. i had to replace the same thing you did. all total with labor and all it was 1200.