Before I owned the lift, I built this in the garage using 4x6s that were previously in the landscaping and a 2x10 that I attached to the top 4x6. :D It was loosely connected to the garage so that if it bowed, it wouldn't put stress on the rafters, but the rafter would prevent it from toppling over. I used it the yank the drivetrain out of the 78 Bronco I stripped down.