Here are some more pics of the fabrication. I swapped the brown set into a different Humvee with the old style front seat (originally I had it on the commander adjustable base, which just required drilling 4 holes and bolting the seat on with the new brackets). The older style required me to cut out the old seat and weld some flat bars across for support and then I just drilled the 4 holes with the same set up as the first. I will probably put in some washers so that the seat material doesn't sit right on the metal. Had to make sure that the seat back cleared the seat belt reel, which I moved down as well for clearance.