I'm looking at an older F-100 for sale.
If you look at it from the rear, you see that the box is 2-3 degrees askew from the cab.
I'm guessing the frame is twisted a bit.
Is this a big deal for a work truck?
Thanks

 

On a vehicle that old it may not be the frame. The bushings from the frame to body may be gone. A cute issue is the rear spring hanger bracket may be gone, which on my 95 f-150 i replaced both sides due to rust. Sometimes just a good eye will tell you whats the problem. Maybe oversized tires on one side?

 

I posted this question based on pictures of the truck posted by the seller.
When I went to look at it in person, the box was square.
Did the seller fix it? I wouldn't guess so, but can think of no other explaination.

 

he could have burned out alot with a limited slip and only one tire spun, that could be why, just check the tire size, if not it could be the bshings like the other guy said, but i wouldnt eliminate the burning out cause mine is like that, but if your using it for a work truck i wouldnt worry to much cause the only thing that will happen with a tweaked frame like that is abnormal tire wear on one side.