first of all problmes is that 1 ton run 40" spring pad spacing unlike your K5
next is axle WMS width issues, and then youll need dually bed fenders and have to cut out your bedside flares larger just like on factory dually fleetside bed sides and put in reinforcement metal and bolts or weld it all, then driveshaft u joint issues, brake hose line issues and so forth.,
good luck