They have just gone up through the body mount hole in the frame in the picture. Four of these jacks, with an adapter plate, could be bolted through existing bumper bracket holes in the frame front and back. A bare Chevelle frame isn't all that heavy. My son and I carried one in and out of the garage with little effort. We borrowed a small rotisserie setup from a friend The front had a round bar drilled and tapped in the ends and drilled through in the middle for a pivot. It was long enough to fit across the frame with bolts from the outside to hold it. A plate was used in the rear and bolted into existing holes where the middle bumper bracket bolted to the frame. Two stands, tall enough to let the frame rotate, held it all up. It sure was handy, especially when painting the frame.