Probably an obscene question.

Going to be getting an All City Natureboy Disc frameset to build up. I've got some 75s at my disposal, and am tossing around the idea of running it fixed. With the Surly Ultra New fixed disc hub the chainline comes to 53.5mm, whereas the 75s on a 109mm BB come to 42mm. If my math checks out, I'd need a 132mm BB in order to use them.

Is this even a feasible thing to try? Common sense is telling me no and I wouldn't be heartbroken, more just wondering if it's even a possibility.

Doubling on this question, will 75s actually work on a NB Disc? I know they'll fit on the 120 spaced NB, but have no idea if there's enough chainstay clearance for them on the disc version. If there is, I'll probably do SS with them and use a standard mtb freehub wheel to get the correct chainline.