It's a preinstalled patch. In fact, it's one of the main gimmicks of the hack!
Good thing I found that out before I started designing my level!
That'll make my level much more fun to design.
EDIT: I'd also like to claim Bowser's Garden because that sounds like a lot of fun to design. What does it entail though? Short pre-final boss level? Or something else? Either way, I'm up for it. Will try to work on it during VLDCX. After its over and Spring Break starts, assuming I take my computer with me when I go out of town, I'll finish both levels then.