wanted: rare powermac g3 metalbox for modem card

[macStuff]

as seen in the image.. i need this silly little metal box that the modem card gets mounted in..
so that i can properly mount a geethree stealth card designed to the same formfactor as the modem

i have the stealth card and the original modem..
the original modem had a backplate that included a spot to screw it into the chassis
the stealth card has no such mountability unless its fit inside the metalbox

if i cant find one ill be forced to unsolder the mounting bracket off the modem and solder it onto the geethree serial adapter card

[macStuff]

some photos to illustrate what im after
basically this little metal box housed the g3 modem, and i need it to be able to mount the imac stealth card inside a g3 B+W