I have a set of TCKline double adjustable struts and shocks which have the sleeve and lower spring perch for the 1M or M3 springs with the intention they could be run in SCCA street classing. They need to be rebuilt which runs about $500. I was going to have these rebuild for my M3 but SCCA classing but the M3 looks to be moved out to BS where it won't be competitive. Let me know if you want some photos of the units.
I originally thought these were TC Kline DA units. Based on a contact with the prior owner-- M3Kerry -- it appears they were custom built by Bob Tunnell of Bimmerhaus.com. He may have used TCKline units as the basis for the custom kit.
These are the units I am talking about
:
http://www.tcklineracing.com/webdocs...Details966.cfm
http://www.tcklineracing.com/webdocs...Details967.cfm
http://www.tcklineracing.com/webdocs...etails1144.cfm