[pjmoreland]

When looking at rear rally wheels, one thing to consider is the width of the rear end of your specific truck. In 1970, GM increased the rear end width by 3/4" per side. This makes OE 15x8 rally wheels stick out of the wheel wells a noticeable amount. A previous owner of my '68 had swapped in a wider '70 rear end, so I ended up finding a narrower '68 housing when I rebuilt my rear end. The first photo below is with 15x8s all around and a wider rear end. The second photo is 15x7s in the front and a narrower rear end.