I have both, and my knowledge isn't great but I'll give it a shot. You want the ZSP suspension. If anyone can hook you up with it, its Tischer BMW (
www.getbmwparts.com). I'd suggest you pm either Jason or Evan. Not sure how easily you can get a ZSP, but I know you can always get the upgraded performance suspension from them, which I believe is a little over $1,000. The seats are also different, but they're not gonna drop it at all
.