Just don't cut out allot of sheetmetal while its on the rotiserie !!! brace both doors before mounting it, the cudas flex like crazy... This one was rock solid, just needed a passenger front floor so the brace was as simple as a peice of steel welded across the opening.... I could have also added a brace up to the windshield but didn't feel it was needed on this one... If you're doing 1/4's, trunk, wheelhouses etc... then it's better to do that work on the ground first with the car still on its wheels or axle stands, then when its solid again you can mount it on the rotisserie for finish welding and primer... preping the underside and engine bay etc is made easy with a rotisserie but all final panel alignment and finish bodywork should be done on the cars wheels or on a body cart.