Brembo package is all-inclusive, but $$$ and you only get the front brakes if I'm not mistaken. A much cheaper, but more time consuming, solution is to source a SLK55 AMG brake setup. There are other calipers that will work, but the SLK55's brake hardware is a direct swap. I'll see if Steve can chime in with the exact part numbers of the front 6-pot calipers, as there is one version that mounts to a 360mm rotor, and one that uses 345mm hats. The latter is much more beneficial, as you can utilize aftermarket rotors. The rears use 330mm rotors with a 4-pot setup...

Best suspension for the $$$ as far as performance is concerned is the Koni/SRT combo... Eibachs lower the car nicely, but the ride is a bit soft and track times, if applicable, will suffer. H&R makes a nice set of swaybars, but the rear is a PITA to install. However, if you're doing axle work, it would be a perfect time to kill two birds.

Are you located in Germany? Search the forums for the Wavetrac build thread, and jump into the discussion. They might be able to work something out...

Sent Rudy (rcompart) a PM... He can advise you as to which years/motors will best suit your goals. I will say, you should stay with MB motors for the best fit & finish. Rudy is a stand-up guy and is one of the nicest gentlemen you'll meet. You will want to get him involved on your swap, no doubt about it.