With less than 44 units of the R63 AMG floating around the United States, seeing one is rare. That's what makes this Weistec Stage 2 Supercharged example a proverbial 'unicorn'.
Lucky for the die-hard AMG / Weistec fans out there, this example is also for sale:
https://bringatrailer.com/listing/2007-mercedes-benz-r63-27-2/
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Stage 2 M156 Supercharger System
The exact upgrade path behind this car's power. Full forced-induction system for the M156 6.2L V8.
Stage 1 M156 Supercharger System
A lower-cost entry point into forced induction for the M156, with a clear path to Stage 2 later.
M156 ECU Tune
The calibration every supercharged M156 needs to run safely and make the most of the added boost.