So you were able to redrill for 6 bolts without interfering with the seven bolt pattern?I have bought a hubkit w/ horn button from Alfaholics that includes the sheet metal shroud. It was for a 7-bolt wheel. It needed redrilling for 6-bolt wheel.
Also remember that there used to be different height hubs in the day to change steering wheel position. A friend used to makes his own hubs on a lathe imitating the sheet metal shroud out of solid aluminum on the lengthened hubs.
Alle, What diameter is your wheel. Mine is 185 mm and has 4 holes per spoke. Date stamped 2 9 and Hellebore. Rim wood is 22/26 mm. Still has original, now flawed finish I believe and some cracking.