when i was going to install my headlights, i had some cheap hotrod lights, i made the mountings by welding 1-1/2" box to the side of my chassis, see pic 1
Attachment:
insurance application 002.jpg
note the mounting, it is straight, also note the distance to the front fender, this was with the wheels pointing in the straight ahead position.
having driven the car for about 100 miles i noticed a small mark on the top of the fender and another on the headlight rim, it was evident that under full lock and traversing a bump, the two were meeting.
to rectify this i tried moving the lamps up, after two inches i decieded that they would still hit, so i moved them in 1" they still were too close for comfort.
this is what i had to do to allow for clearence on full lock and full bump.
Attachment:
john camera 026.jpg
diferent angle but in essence i had to move them back so that the widest part of the light was at the fulcrum of the wheel turning circle, half an inch in either direction would result in a contact, i still am not convinced that they will never meet so i have placed a piece of soft felt at the contact point on the headlight just in case they will ever meet.
the moral of this story is 1, use the real lights that you will be fitting in the mock up stage, 2, test the clearence at full lock and full bump, 3, allow sufficient room for light direction focus adjustment.