A wee note to free thinkers like me who are prone to not thinking enough. I reasoned to myself that it did not matter about the hub mounting hole positions on the rear uprights, why should they be vertical for disc brakes & horizontal for drums? After all the doner disc braked car had the calipers on top & if I made the holes horizontal both uprights would be the same & save confusion. So I welded them up that way, simple. Then had a thought while out execising. Better try the hubs & calipers on the finished product. Sure enough the calipers foul the top suspension arm attachment ears. Bugger! However there is always a way out & that is to swivel the hub through about 45 deg. to the rear. You can pick up 2 of the existing holes on the diagonal & drill & tap 2 new ones to suit but be careful to make 1 right hand & the other left hand. Instead of the calipers being vertical the will be at an angle, way cooler.