A little update on the SCS kits and testing, and so on. Our DT 350 end caps do in fact work like a charm on DT 240 hubs, and so one would assume, also on DT 180s if you are WICKED BALLER. Though I question your fiscal responsibility... dollars per gram, guys, come on...
So anyway, yah you can use the kit on any current DT hubset of that family.
Also, we have converted 2015 (and 2014) Roval disc wheels from QR to SCS. The hubs are different in 2016 and are a direct match for the DT stuff, but of course they come out of the box SCS, so no need to convert 2016 gear. But the older 2015 stuff will convert.
That said, once you convert them, the front drive side hub shell is going to rub the carbon on your fork. We ground that down about a millimeter or so with a flat file and ran 'em. Its just a front hub. If you really don't like it, buy a DT350 front hub and re-lace them. But that just seems dumb. Better solution, SELL THEM and buy some NEXT wheels. Ours are 25mm wide instead of 23, and that is 2mm BETTER.