'''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
The thread diameter and pitch are the same for "English" and "Italian" threaded headsets so they will interchange. The thread profiles are slightly different (60° included angle for English threads vs 55° for Italian) so repeatedly changing back and forth is not recommended but using a Shimano headset on an Italian fork will be no problem.
Thanks for that, HillRider! One more answer out of you and I'm going to have to start paying you a fee
Oh...got the new calipers on my friend's road bike finally. Had to find an iron shop to drill it, as I'm without my full set of tools for the summer. The new performance and stopping distance are great and she feels vastly safer on her bicycle.