You have already seen a few of these products on BenzBoost. AMS made a big splash setting the M157 V8 horsepower record with 787 wheel horsepower. The preliminary Alpha 9 package car also recently ran a 10.7@135 in the 1/4 mile with more expected to come. In addition to the M157 the M156 is also getting love with an Alpha C naturally aspirated tuning package putting down 480 wheel horsepower.
AMS is represented here by @ALPHA Performance and can be reached at: www.amsperformance.com as well. Very exciting times for the Mercedes Benz Community.