I'm going to start building a rotisserie tommorow night. I would like to build one that has a capacity for a large car. I've seen pics , but I'm wondering how high to place the pivot point from the floor. Also tubing specs. would be helpfull. My main objective is to use it on a pickup truck cab, and have it later for an auto resto. Doe's anyone know of specific cab rotisseries or have any ideas? (Doing floor and support work. Any tips would be greatly appreciated. And plans would be awesome! Thanks.