Hey guys so I have a 75 gallon that I’m putting an overflow box on but my problem is the holes are already drilled. They’re 5 1/2 inches apart from outside to outside. So how do I find a box that has those size holes with the correct bulkheads? It was directly plumbed to the sump but it caused way too many problems. Am I screwed or will I be ok also how do I prevent it from leaking? I want to do this right the first time!!!