I've got a rear mount which I can measure up if you like?
Is this giving you IS compatibility? Would be really interested in how you go about making one of these, IS or Post. Anybody got dimensions or a tech drawing?
The two drawings I've shown above give you the option of using 160mm ISO mount discs and either post mount calipers or ISO mount calipers on the front. If +20 was required then this could also be done. Rear post mount will allow a 160mm disc on ISO hub to be used.
Easiest way would be water jet cutting, then secondary ops for threads.
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