The 430 version sports the "regular V8" (275hp); aero kit, AMG wheels (Staggered front/rear), and sport suspension/exhaust to accomodate the weight/character of the V8. Moreover, the interior is upgraded with a few interior tidbits to distance itself from the 320 version. If you're looking for a more "sporting" ride (closer parameters with your porsche, but not quite on the same level) you may want to consider the CLK 55 AMG.I'm looking at selling my Porsche Carrera and considering a CLK 430 (like the wife's E320, more room, etc). What are the upgrades with the AMG model? Are they just the rims and aero parts, or are there other performance upgrades i.e. suspension, exhaust, etc? Thanks for any info.