What would you pay? 67 K20 4x4

[gmc71]

I have been looking for a 4x4 frame for a while now and came across one in a farmer field, actually its a whole truck.

Its a 67 K20 4x4, complete, bed is a total waste, cab is completely trashed, junk seats and stearing box and coupling extremely rusted. Front fenders, grill, hood may have some value to someone. Comes with a 283, non running.
Now the good stuff, frame is in great shape, I believe the axels are 4.56, the front is "original" and had a quarter sized lock out on it ( I have never seen anything like this). A 4 speed tranny. Missing clutch and bell housing.

The guy will deliver it to my house for $350.

What do you think?

Any info on the front axel?