Unfortunately. I didn't intend on stuff falling on it. Also missing the back panel somewhere, not entirely sure where that is but probably in a box in the garage. The casing isn't wrecked though, nor are any of the cables. The only pieces missing from the case that I know I had are the CD front and rear cover but I'm 99% certain I have both of them. The optical drive and keyboard with leather I know I don't as they were in storage which was lost in auction and I never had the speaker grills. 

Does your EVT's PSU have a tag on the bottom with a number? I know mine has a hand written tag "SN006" which I only assume is "Serial Number 006" but I don't know the history on it.

Related to the hardware though: The motherboard works fine in a 6400 case. It seems to be a revised 6500 board, complete with a 200 MHz 603ev (not 225 or 250 MHz 603e). 3D Rage II graphics, no onboard ROM (SIMM only) and regular 6400\6500 ports. The ROM is actually a stock 6500 ROM however there is a ROM flashing program that was on the original HDD that has the "Gazelle ROMondo" file, which is the stock 6500 rom.