The ACS stuff is great quality (always has been, whether in CF or PU-RIM) and these M3 items are genuine race-inspired carbon fiber parts. They are definitely not for everyone because of the high price point, but for those who want the best, this is it.
Wheel Experts has handled ACS for 8 years now thru North American Importer CEC, and they have never let us down. They have always stood behind the product and their vendors with great customer service. Plus, the parts always fit great.
Back in the E46 days, we sold more than a few of their CF front spoiler, rear diffuser, and interior trims for the E46 M3