Like the title said... looks loke the eibach pro kit springs for 1st generation RX7 has been discontinued. I have contacted dozens of suppliers seeking a set of the pro kit 1st gen springs (part # 5507.140) over the last couple of weeks, and each one has come back advising that this part is no longer available. Finally located a set in stock and jumped on them, but if you want a set of eibach springs for your 1st generation RX7 better get them now.