85 c2500 suspension on a 66 frame?

[jadedbird]

So my buddy wants me to do his research. He has the chance to buy a 2wd 85 c2500 with power steering/power brakes (but no brake booster is on the truck)
it's a 14 bolt rear end and 8 lug truck... Used to be a diesel. But was converted to a 350. (And that's why the booster is gone)

So will the 85 goodies fit?
Also he wants to know if 16" hd rims of. A 04-07 Silverado would fit those axels?
thanks in advance