S3 replacement carpet..Polypropylene or Wool?

I need to replace my S3 carpet set but cant find; through any research, which is the favoured or most original material. All seem to offer Polypropylene or 80/20 Wool.

What are peoples experience or recommendations for which material?

It depends on how authentic you want to be. The S3 Concours Judges’ Guide says, “Flocked nylon - sewn in vinyl inserts on driver and passenger’s side and driver’s side tunnel - cut pile. Wilton Wool is WRONG.” The Guide goes on with a photo showing two trim options. It’s worth a check. The Guide can be downloaded from the JCNA website.

I’ve had a good experience with World Upholstery & Trim. (www.worlduph.com).

I’m surprised there aren’t more views on this. Everyone else must have good carpets