yep front, i already have the 22mm adjustable rear on the hardest setting, so its going to be an experiment really to see if it helps the overall handling,
ive done enough reading (and my personal experience, i have the 22mm rear bar on the hardest setting) to figure out that just doing the rear does help a lot with the balance on a stock(ish) setup, but as regards to improving overall grip levels i couldnt really say, but i feel that doing the front should also have tangible benefits in helping prevent understeer for the obvious reasons of helping the front wheels stay flat on the ground