Taffy the original Morgan Aero 8 series 1 wheels are magnesium centre lock - and, unfortunately magnesium wheels are virtually impossible to repair.
The Morgan Motor Company did buy up the last of the stock when OZ ceased production; however, I am not sure if they still have any set left (they would be my first call if I was looking for a new wheel).
Morgan did move over to a traditional 5-bolt wheel late in the Aero 8 S1 production run - therefore, it is possible to fit the later wheels to your car. There are plenty of photos in the Talk Morgan Photo Gallery of S1 cars on the 5-bolt wheels (MattC's being a great example).
These 5-bolt wheels are definitely easier to live with but some people believe they loose a little of the 'road-racer' look that appealed about the early Aero 8s (but this is obviously down to individual opinion).
Lastly, sets of the OZs do come up for sale on this site - although not often.
