Not specific to $G, mine were custom, but I used a couple of wood spacers, one at each end to get the gaps right. Mine followed the contour of the door panels so they had to look right. Then used floor jacks and jack stands and to adjust and keep them stable. Marked the holes and drilled. I had one hole location that I should have used a right angle drill that I do not have, again, not sure about yours. It was under the rear door right at the hinge location that was tough to get into. Measure twice and cut once, or play around with them before you drill.