This is some general info on the Sno Commmander Trail Duster package for 1978 ONLY
the code is YC6
It included:
Power Angling Blade
Power lift and 7 way control valve (Requires GVW code YW2)
minimum 63 ampere alternator
70 ampere Battery
came with 225 / 318 / 360 engines
Plow lights
Increased cooling
AW100 ONLY
Hope this helps