Would be much better than tri-y's or the crude AMG headers. If these clear the steering box and engine bay obstructions, nice item to have for best performance. Wonder if the A/C lines might interfere or any other non-racing engine bay items.
Equal length headers ensure maximum torque at a given rpm, but are not ideal below and above that rpm. It's good on a track or on a rallye course with a close ratio transmission allowing the engine to remain as close as possible to that rpm range but not ideal on open road use where a much broader rpm range is needed. This is why MB and AMG came with the tri-Y system as designed. There is a loss of maximum torque but it is spread over a much wider rpm range making the car easier to drive, and faster on an open road in the end, unless one constantly drives as if on a rallye course.
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