Okay I'm going to be serious here for a minute. I think you should build a new stand from scratch and put the 55 gallon tank underneath it as a sump plugged into those beautiful overflows in your big tank.
If you have a circular saw and a drill motor you can build a sturdy enough stand out of two-by-fours for $50. It will just be a bare framework, but later you can dress it up by covering the outside with plywood or tile or pretty cloth or anything you like.