In the rear I had no choice, as my rear hubs were defective out-of-the-box (still no news from Tonisport by the way). It seems that some of the first batch were just badly mold and the arm's hole are not perpendicular to the bearings hole. So with that you gat asymmetrical toe-in, which is really a problem on the track (car is stoppen when turning left). So first I use the D09 arms with D09 rear hubs and D10 front knuckles. I ran twice or thrice and finally I lost the M4 screw and with it the bearing, the shims, etc.
So from there I had no other choice than re-install D09 c-Hubs and try. The car was indeed different in the front and absolutely less linear, and it feels better to me, especially in corners entry. It seems that it could be better on small carpet track but on our outdoor track I really prefer the feeling of the D09 :-)