Hmmm. The 550 is going to be naturally aspirated, while the 55 is forced induction. My boss is going to put a down payment on a CLS63 here shortly, and he is going to do the Kleeman K4 on this one.


Its going to be a bat outta hell.

I would get the 550. More mods can be done, as it is the same displacement, and you can get the same amount of power with all of the "right" mods. It would be cheaper too.

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.