Steve, yeah, I have a brick of it too, at -15F in my deep freeze... I started a thread on this over on Photo.Net a year or two ago on this; but in my case I was looking at a dip & dunk line with some mechanical trickwork for the red & blue re-exposure chambers.

Photo Engineer gave me some help with the Wratten filters needed & such; but even if I built it, it would still be almost 10 feet tall, and only able to develop 120 & 135-24 exp (and sheet film), because unlike in, say, a Refrema, the film could not be draped over the hanger racks: It would have to be clipped on the end, in order for the re-exposure steps to work properly.

Cheers!
Dan