4x4 70 GMC, any things to look for?

[muddpile]

I might be buying a 1970 GMC 4x4 to use as a daily. It's in really nice shape to look at, well maintained, but I don't know a lot about these trucks in terms of their 4x4 counterparts. Here's some specs:
-1970 GMC LWB 4x4
-4:10 gears front, 4:11 rear
-350 4bbl, mechanical choke, headers
-4 speed trans


I think that's it. I'm not sure about power steering, brakes, etc. yet, as I'm waiting for an email from the gentleman with more details. Are there any problem areas that these trucks were known to have as 4x4's, and is it feasible to use one as an everyday driver (majority winter). It will see some local, some highway, some offroad, etc.

Any tips/advice would be great, thanks!