Hi, JungleJames, I inquired about this a few years ago for a 1/2 ton so I'm not sure if this will work for a heavier truck. But someone might chime in with more info. Many vendors sell the upper and lower brackets for tube shocks. You might be able to find used. The links below are for Classic Parts.
Upper shock mount front and rear
Lower front shock mount
Lower rear shock mount
Bill's Truck Stop Page 103
Bill's Truck Stop


It's a small world, but I wouldn't want to paint it.