The inner and outer boots are different. Just to complicate things, there are different inner boots depending on the type of driveshaft. But if your car (it's an R1128, isn't it?) has its original driveshafts, the part number given in all my parts books for the inner boot kit is 7701450617.
This is an equivalent (I don't know anything about this company, though): https://www.motor-doctor.co.uk/products/9442731-bellow-driveshaft