I've had a very early SB12 for almost thirty years and I can honestly say that this is my desert island amp - if I was limited to one, this would be it (even if its not practical for loud use) the amp did not come with the dolly / casters and as I get older, the amp gets heavier. I've noticed that at least two of the vendors that are linked to Portaflex websites offer repro dollies. My concern is that my cab has no holes or hardware to attach to a dolly. How ugly is the necessary surgery? Is this one of those good ideas that I'll later regret? (why did I drill holes in my cabinet !?) Am I better off just using a handcart?