I had a 300e as one of my first cars. Loved it. If I had known the possiblities i would have gone for it. But, truth be told, I always wanted an e30. (yes Im one of those e30 people).
But when I did look for parts for the e300 there really isnt an aftermarket for it?
Unless Im completely off, and there is a company making suspension components for the car, sway bars blah blah blah.
Maybe other Mercedes parts are interchangeable though.