Man Euro, you're everywhere I am. ST, RC, and now here. Anyway....
I'm assuming you have Tektro/Cane Creek TT levers. IIRC, these use lollipop style ends with a disc that the cable enters radially, which is what mountain bikes usually use, but have a look at yours and make sure. Road stuff uses the ones with ends that look kind of like a microphone -- A thick cylinder on top of a thinner one, with the cable entering axially.
I've never done a Nokon install, but my understanding is that the magic is in the housing and lining, and the cable is pretty normal stainless steel stuff, so you can swap them anyway. I would measure your cable runs, though, and find out how much housing you get with each kit. I think the MTB one gives you a little more.