I have a 2011 Norco Judan with gates belt drive which I want to convert to a 10-speed chain setup. We recently moved and our new place has a lot of flat open roads which made my miss my gears. I already have a groupset ready and I am just looking for the sliding dropout that has a provision hole for an rear deraileur.

Anybody have an idea where I can source said custom sliding dropout? Anybody did the same convertion?