Dana 44 Alignment ?

[72 Cheyenne K20]

I have a 72 K20 with stock Dana 44. I was looking at it today and noticed that the passenger side tire sticks out past the fender farther than the drivers side tire. I have 305/75/16 tires on it. same as 33x12.5"s. I took a tape out and measured from the inside top of the frame out to the outside tread of both tires and it's almost a 2" difference. 27.25" on the drivers side and 29" on the pass. I put new stock springs and shocks under it in the summer from Detroit Springs and they went in fine. Everything lined up and bolted up good. Is this normal? If not, how am I an inch of center if everything is straight?

Thanks, Scott