A fourth C8.R is being built up to cover Road America and LM in August.
The #63 is still in Europe. The existing #4 will become the #64 and be freighted to France (not via the UK as in the past because of, you know, that stupid thing we did) . The new car becomes the new #4.
https://sportscar365.com/lemans/wec/...f-24h-le-mans/