Regcabguy
Oil eater.
Close but no rack mounts on the sides,and I don't remember an arched rear roof end. The rack attachment is not what Callen used to use.Looks like it's a Callen Camper?? Great camper and steel framed if it is a Callen.
Yes, people use jacks to lift it. You will need a mounting plate that can handle the load.
I'd suggest googling it, there are plenty of answers on various forums