After seeing your pics, I would have to agree with Luv & Bouncy, those do look redone in a custom pattern. Your post got my attention as GMC did originally use some two tone custom covers in colors that were not offered in chevys. Below is a picture of my A50 optioned 69 GMC Custom 1500 with the original two tone seat covers still in place. Original 72 sport bucket seat pattern on your jimmy should be similar with the upper corners of the middle inserts being rounded & following the round edge contour of the seat back. Cb