Need pictures of 15 x 8" Cragars on 67-69 Dart

Large bolt pattern. The 15" x 8" Cragars have 4 1/4" backspace. I am going to shorten the axle housing a little and use some dr diff 1/2" offset leaf spring hangers. I have 245/60 coopers at the moment mounted on 7" cragars with 4 1/8" backspace. Don't want to buy the 8" wheels and they not fit. I will stick with the 7" if I have too. I would like the 8" so the 245/60 tire will flatten out the tread a little. I am hoping for some pictures and insight.