Kinesis Advantage keyboard
Kinesis numpad (Yep, it has Cherry MX Browns to match the Advantage)
So very glad I did not destroy my Kinesis in the process.
I bought some X-Acto knife/saws, and basically just hacked away room for it.
I'm very happy with it, but I would only recommend doing this if you are a MUDder. Easiest way to walk in a MUD is with a number pad. Only other use I can think of, is to make entering numbers (i.e. credit card number, phone number maybe, etc) easier.