Well,
I'd look at one of Wayne Coe's grinders, or buy a GIB from Polar Bear Forge. I did a search but couldn't find anything but factory grinders on e-bay now.
I have a GIB 2"x72" with a VFD that I built for just over a $1,000. But, that's with a VFD, and new motor. If one had more time than I...