I have a cabinet similar to that except it is a 5-drawer not 7. I have an electrified 66 head that I am planning to install in the cabinet. The machine needs work yet but it does fit in the cabinet. If you like, PM me and I can take some measurements if that will help you. You could also jump over to
http://www.victoriansweatshop.com and someone over there might be better able to answer your question.