Sold/Expired CHEVY ZF 6 speed Manual Trans

i have a good friend of mine looking for a ZF 6 speed Manual to fit a Chevy/GMC truck.

The years of this transmission were 2001-2006 Chevy/Gmc 2500HD and 3500 in the Duramax trucks and also the trucks with the 8.1 gas motor.

I just thought it might be worth asking here because i called around for over an hour today trying to find one with no luck. If anyone knows of one please send me a message.

Thanks, Wesley