How many were made?

What I know of them is:

7.100 lbs insted of 8.100,
Different motor lid,
The smaller gas tank from the 30 OL,
carbonfiber/kevlar reinforcements (but where?),
No holes in the cockpit sides for speakers/cup holders..,

What more?

I think only 2 of them were made , maybe im wrong ???

I´ve seen at least 5 different ones.