Not quite matey, the caliper bolt holes are 16mm and the OEM bolts are 14mm, so you need some shouldered bolts theyre available from Thomas at porschecalipers but i'd be researching the quality before I strapped a very heavy caliper to my car before installation.
I was making them for £100 a set out of Nickel plated EN16 which has a 70 tonne tensile strength which trims to 55 after machining, sold my last set and vowed never to make them again as people were just sleeving M14 bolts which is mental
Much better option is the 996 Turbo Calipers with a fitting kit over the same discs, its a FIA homologated caliper with loads of pad choice.
Whatever way you look at it, the Cayenne caliper is extra weight than stock with a worse pedal feel and limited pad choice and we're supposed to be upgrading.....
Nothing wrong with a purely cosmetic aesthetic upgrade but dont expect your jaw to drop when you jump on them for the first time unless of course your present OEM brakes are shocking