Going very old school. BTX form factor

I have a NOS D955XCS mobo I need to get into service.

Made by Intel and I believe used in early versions of the Dell XPS series.

Here is my problem. It is about an inch too long for the Dimension 9100 case I had planned on using it in. Board to tray holes are off by just about that much.

Old BTX cases can be found out there. Usually at a decent price.

Shipping being more then the price of the case.

What I am asking is, just what Dell model case is large enough to accept this board.

Thanks in advance.