I know this an old thread, but here goes:
I use several methods with a Schneider Componon-S 135mm enlarging lens, all using it reversed, by using step-up rings to reach 52mm. From there-on it's easy, since that will thread onto a Nikon BR-3 (52mm one end, Nikon mount on the other). I couple the lens directly to my PB-4 (has tilt and shift), put a Nikon to EOS adapter at the back of the belows unit (you can get almost any adapter these days), and voilà. I can get super macros all the way out to infinity. You won't get infinity with your lens, since the bellows draw + the camera well are too deep for what you have (~135mm is the min. for these bellows), but you can do almost anything with adapters that way. My EOS 30D will meter in M and A mode, with this system.
I've used smaller bellows with T-mount threading, etc, and I always find that the best is to reverse-mount the lens (for both better resolution anyway and ease of mounting it by its front threads through step-up rings or other adapters). And I've reverse-mounted enlarging lenses on the front of zoom lenses, too -- works great, if bellows aren't your cup of tea. Try it out ! 
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