I was amazed to find this decent recording of the four Capriccios, arranged and played on harpsichord and organ by Anastasia Giuliani.
Available here https://store.cdbaby.com/cd/anastasiagiuliani14, for a very modest fee.
I'm sure many would love to see the scores of these arrangements. I particularly enjoyed the ones done for organ (the first Capriccio, seemingly quite natural for this!)
Seb