I guess i can go ahead and post my starting point
I found this on Craig's list. Initially used it with two 5-Gal torpedo kegs.
However....there is room inside for two 3-gal and 2 5-gal Corny kegs and maybe the C02 tank. I've replaced all of the hoses and am redoing the top. The big surprise is a custom made 5-tap tower that's currently in the works.