Nitto makes several two bolt posts. The lugged steel post is 1) beautiful and would look different but in place on a bery old bike, 2) is not heavy despite sounding it and 3) is a joy to work with and adjust and 4) has lots of setback. Drawbacks - expensive and probably not in 27.0. I have it on my Mooney where it is a keeper. Uses an Allen wrench so that is easy. 5 or 6mm; one you are going to have on hand anyway. Currently made and easy for any shop to get.