11/44 Expansion chassis

I'm thinking that it would be Fun to have another Unibus chassis on my 11/44 system, the better to hang some more peripherals from. The current machine is stuffed like an Xmas turkey, and I would rather not run the old power supplies our near their design limits all the time. I have several old 11/34a boxen lying under my (inacessable) workbench. I got to wondering what would be involved in using one of them for the Purpose. I somewhere dimly recall that the interface cable for RK05 devices is in fact a Unibus jumper cable, but that could be an optimistic imagination. I've got a couple of those idle. Does anyone have any experience or thoughts about adding another chassis to an 11/44 system? [ Easy? Can o' Worms? Don't even *think* about it? ] FWIW, I *do* have several (4) 11/44 boxes, but I'd like to save them for spares in case the main box woofs it's cookies. The 11/34a stuff is much better, if its feasible. Cheers John