I say it would ship it up to Ak. for $50.
Thanks Richard for posting that info on the XL saws.
I'm not sure about swapping the power head out but here is some info I found online for the Cobra Winch.
Dimensions: 9" high, 8 1/2" wide, 20" long
Weight: 38 total weight (including cable)
Powerhead: 2-cycle Homelite XL gasoline motor
Winch chassis: 50-51 High strength aluminum, 1 piece frame
Drum capacity: 150' of 3/16" diameter cable
Gear ratio: 1:1-from motor into gear box, 53:1-inside gear box, 8:1-from gear box to cable drum
Capacities: Single line pull--2000 lbs. Double line pull--4000 lbs. Triple line pull--8000 lbs.