"Interchangability" 79 Blazer to 82 K10 - What fits?

[morglan]

I've found a 79 blazer for parts, and I need to know if it's worth picking up for parts for my 82 K10. Specifically, what I'm looking at for replacement parts are:

Dash Pad
Heater Controls
Door Panels
Vent Windows
Steering Gear Box
Window Motors (Elec-as my 82 is, or switching to manual-if that is what the 79 Blazer has)

I need help--will these parts inter-change?

If so, and I pick up this vehicle, I'll be offering the rest to you guys dirt cheap before I send the rest off to the junkyard.

Thanks