There is an interesting bit at the end of this listing about wheels fitted to P1029.
2 x Borrani original RW3801 Wheels Ferrari 250 dated 02/65 15" x 6.1/2", GT40 ? | eBay
2 x Borrani original RW3801 Wheels Ferrari 250 dated 02/65 15" x 6.1/2", GT40 ? | eBay