Try giving Amazonia International a call. They are out of Austin. They don't make them. But they have a place in Houston that makes them for them. Incredible prices too.
I don't know if this is going to make a difference, but they are where I bought my 125 gallon from. I am extremely pleased with it. I went because a friend bought a 180 gallon from them too. He is also happy. I guess that word of wouth works.
If not them, try this place
I amnot sure where they are from. Some other state I think, But they will be at the ACA convention in Dallas over the 21 - 24 of July. They will deliver there for you. I have never dealt with them, but they seem to have good prices on custom. HTH