Does anyone has the part number to the Rear Valance Venturi Blade and/or a place to order the item without having to order the entire Sport Package?

Thanks in advance.

Jaguar Beast

 

Looks like it's an exclusive SVR part, so you would not be able to get one from a JLR dealer without a valid SVR VIN.
Which also means it's extremely unlikely anyone other than a JLR dealer would have a new genuine one for sale.
A faint chance there may be one or two available at a wreckers/breakers yard, good luck finding one though!