To run this wonder rack your fork needs to have two things: a mid-point braze on (aptly called a Mark's Rack braze on), and a fork crown hole. Nitto sells the rack with P-clamps, but don't bother! The P-clamps are garbage, they just don't work well in general, so why submit your future self to endless frustration?
When you buy the rack from us we include extra long stays, which allow you to reach both stays to the mid fork braze on, the ideal mounting point for max triangulation. Most places sell the rack with 1 set of long stays and one set of more or less worthless shorty curvy stays. That's why ours cost a bit more!
If you're concerned at all about any other compatibility issues, shoot us an email.