I have one I could sell. It's drilled in a few places that give you a few options. There's a hole in the top center for an overflow and two on each lower corner for a possible closed loop. They're capped and didn't leak the year I had it set up in Florida. I can't sell the overflow with it, but I don't have room for the tank at the new house. It's a PetsMart tank (yup, I paid too much), but I dont' know if that matters. I'd let it go for $40. not trying to gouge you on a tank, but I paid $125 for it and would prefer to store it than sell for less. You could also borrow it if you're in a bad way, really need something and would rather buy a new, undrilled tank.
this is the tank when it was full. You can see the overflow top and center. It's in the packing box it was in when it shipped from Florida. If you want it I'll unpack it and make sure all is well before you make the drive.