Tony, i believe your rear should bolt up without a problem you may need longer studs, the only problem i really see is your front hubs. a dually has a spacer off the drum/hub to the wheel i forget exactly what it is called but i don't believe you can just put one on due to the hub/lock out yours has. i think it may be kind of hard to mount dually rims correctly on the front of yours. you could put duals on the back and leave your front alone, but it may look funny. i ran into the same thing when i thought about changing my 49 3600 into a dually, i would have had to leave the front alone on mine so i didn't do it. but it may all work out good luck
