12. Plastic bags to the rescue again; this time to help slide the tight seat back upholstery over the larger Cobra side bolsters. It’s amazing how easy the plastic makes getting the material in position. You’ll notice the long vertical strips of hook and loop glued to the foam as well. Once the upholstery is in place, these help shape the material around the bolsters; simply push the material down for the hook and loop to secure the material.