Do yourself a favor and just buy the new aftermarket shocks. While the RD200 and CL350 aren't too far apart in terms of weight, the quality of any used RD200 shocks would most likely be poor. I don't have any experience with the Tec shocks but I do have a pair of the same progressive rate shocks sold by Common Motors (they're technically EMGO brand) on my CL350. They're decent but I would eventually like to get something nicer like Hagons or a nice vintage set of Works, Fox, or Koni.