67 c10 frt/rear tack width difference? wheels?

[bloodybigblock]

Thanks and thanks for your service also. I love it here,but i cant build trucks so id rather be home. The wheels are almost the same as factory wheels. 15x7 with a 0 offset(4" bs) from factory and these are +6(4.5") but .5" wider. I just cant find info on the track width. On 73-98 chevys i know the rear is roughly 1.25-1.50 inches narrower.