Dart on a rotisserie
My rotis is by Auto Twirler. It is adjustable for height on the front and rear pedestals so I could get it at the right height to be able to rotate 360 degrees without hitting the top of the car on the connecting piece. It also adjusts in width with the front and rear crossbars. That allowed me to attach to the front frame rails and to the rear bumper mounting holes. I've had no problem with balance.
My rotis is by Auto Twirler. It is adjustable for height on the front and rear pedestals so I could get it at the right height to be able to rotate 360 degrees without hitting the top of the car on the connecting piece. It also adjusts in width with the front and rear crossbars. That allowed me to attach to the front frame rails and to the rear bumper mounting holes. I've had no problem with balance.