How To Make A 3/4 ton into a 1 ton DRW??

[98Murray]

I have a 1985 GMC 2500 with the 454, 4 speed, and 14 bolt rear. I would like to throw a flatbed on it and dual rear wheels with the dual style fronts. What all will I need? The rear should be simple enough, just DRW hubs and brakes right? I am not so sure about the front though. Do I need full 1 ton front end parts or just spindles hubs and brakes or does the whole front end need to be changed to 1 ton dually style? Also I am wanting to put 1 ton springs on it, the old suspension is pretty worn and needs replaced soon. Will the 1 ton springs simply swap out with the ones I have now? Basically I want to turn this into a true 1 ton DRW truck. It has the engine trans and rear to do it. Heres a quick photo. Thanks!