Where to get spring part?

So, we installed new Eibach sport kit on my 92 accord last night. We noticed that the rears didnt have the rubber spring seat deal in it. The front did have them. Do you know where you can buy these? I hope im explaining it correctly. Its just a rubber donut deal that cushions the top of the spring from rubbing metal to metal. I guess we are going to take them back apart soon since i realized today that we put them in upside down. They went in perfectly but apparentley the instructions say to have Eibach right side up. mad.

Since it's just a rubber ring I'd call the dealer, it shouldn't be very expensive and chances are they have them on hand, either that or call a suspension shop.

i bought one at VatoZone when i did mine, my friend ripped it up pretty bad and had to replace it.

cool thanks