Not an R8 owner unfortunately

However, I've been looking for an OEM cylindrical paper air filter I can mount directly to the MAF in my car (98 Volvo C70 turbo) and noticed the stock R8 filters screw right onto what appear to be bosch MAF sensors with the same design as the one in my car.

I was wondering if someone can tell me the MAF inlet diameter for both the V8 and V10 R8 since I don't have access to any R8s to take the measurments before ordering one.

thanks for the help!