Deep/Wide Sumps (20"+)? Only Custom?

[wpeterson]

I'm putting together a new tank and planning on a DSA 90 gallon (36x24x25). The stand doesn't have a ton of space with only 36" across, but does have more space across being a 24" tank. The interior stand space is about 34"x22" Does anyone make sumps to these sizes (34x22x12 or so)? Or is the only option a custom sump?

I had hoped to buy a cheap glass tank and make my own sump, but it doesn't seem like the standard tank sizes fit well as a sump in this floorplan.

 

[mbian112283]

There is a guy on ebay that does them. I was looking for something to fit under a standard 90 stand.