Does anyone have a 40G LONG aquarium for sale (or willing to trade for a 55G)? Footprint should be the same as a 55-gallon (roughly 48" by 12") but it is SHORTER than a 55G.

I have a double stand but the bottom 55G sits WAY too close to the top aquarium, and I can barely fit my arm in there! I need the tank for my crayfish, but want one I can actually fit my arm in. I'll trade the 55G that is there now for the 40G-L, but it MUST have the same footprint.