I think the truck should value on par with NADA or KBB, not increase or decrease. I'd look at a truck with a replaced frame more favorably than one that hasn't had it swapped. I'd know that I'm much safer in the newer frame.
Seems a lot of folks have a serious lack of trust issues. I'm far from naive but I'm not cynical about major repairs or rebuilds. Come on!
Let's look at this from another perspective. Would you buy a used car that was rebuilt by Boyd Coddington or Chip Foose first? I can say that in my opinion, one is a hack and the other is a very thorough restoration expert with attention to detail.
Flame on folks....