I believe MrMark uses modified eibachs on his JP M45 and he was looking to sell them.
I scored one of the last eibach sets from the tire rack for my M45 back in December of 05, so do a search on this part number and you may get lucky.
part num: 6371.140
I had the same issues you did back in Demember and here is what I wrote
zerothread/177695