I have 4 pickups and trailers and one small dump that pulls a trailer as well. We have picked up more snow accounts for this year and all but one truck is 4x4. It is a 85 Ford ext cab. Good over truck, no rust, ect, clean truck ans always pulls a 5th trailer. I am looking at 1. replacing with 4x4. 2. replacing with say a dually with a flat bed, stake body with a 5th wheel. - - -that way I can plow snow, place on a sander/icer during the winter and yet be versital during the summer. Then comes into place a gas/diesel engine and new or used? All this is vs a 3/4 ton pickup. Would like your thoughts!