You should try one of the vendors or sponsors here. They are great to deal with!
duke62 said:jbm you live close to me bring your tank over and ill drill it.pm me
I used a dual drain version of that over flow years ago. It worked well, but the only draw back i found was that it has no grill on the front and used to suck everything (fish...) that went near it down the drain. I cut a piece of egg grate to fit snugly in the opening to prevent that from happening. I know that i could have put a piece of foam in there, but i didn't want to put my hands in the tank every few days to remove it for cleaning. Thats a pretty good price. Just hope the cost of shipping makes it worth while. Good luck.im generally a believer that if it's to good to be true chances are; it probably is.
came across this website on a super cheap overflow box (im in the process of collecting things for a 30g tank)
here is where i found that & many other things that are a bit to cheap to be true