A little word of caution. You cannot or should not use a rotisserie for replacing panels. You need to have the chassis on a jig to hold everything in position to keep the door opening and everything in place. They do sell carts for that use. I have attached a link to a place in Georgia that does lots of panel replacement and you can see the jigs they have. Not saying go there but see how you should do it.
A rotisserie is used after you get the body panels replace to make it easier to sand and finish the panels.
The rotisserie can also be used if you media blast the car but never sand blast the exterior body panels or they will be trash.
Dip stripping is best way. There is a several month waiting list here for local source.
I bought a used one for $800 and have been offered more than that for it. I bolt up to front bumper mounts and rear spring mount.
I was at an estate sale last year and two were sold for about half price and were brand new. Post up an wanted ad in craigslist I bet you get replies.
https://www.graverobberssheetmetal.com/
The one I have has rather large tires that make it easy to roll and one end pivots so you can steer it easier also. The one with Firebird on it is in a friends shop. He is putting the head lights and bumper on this week and the car will be done. That car had to have floors, quarters, tail light panel, inner fenders and all was done sitting on jig on floor.
If you want to keep the rotisserie looking like new so you can resale just wrap it in stretch wrap to keep the overspray off. I cleaned the one I have and painted just to make it look better.