A jack for sure. I have never muscled one in on back, and never will. I have a old floor trans jack that has a large flat pad, but as stated, the way the case is, it just wants to flop around. I would build a simple adapter just for the 833'2 because of this. I have done them on a regular floor jack too, but its a little unnerving when it get some height and I have had them fall off before---thus me reasoning for building a simple and specific adapter. I bet it would cost less than $20 in materials to make.