You may want to do a search online for Lesjofors Springs. Part #4056804(?)
Maybe Phil can work something out with the below vendors:
AutohauzAZ.com has Lesjofors for several benz chasis for around $56 ($210 list) I'm thinking about a set for my sdl......anybody have an opinion on these?
All-Saab Parts has at least the rears for $66
http://www.all-saabparts.com/item.wws?sku=MBZ013346&itempk=38708&mfr=Lesjofors&weight=12.000
Rear Coil Spring
Click to zoom! List Price:
$79.80
Your Price:
$66.28
Quantity:
Manufacturer: LESJOFORS
Part Number: MBZ013346
Description: Rear Coil Spring
Rear; W115 chassis;Packing Size:EA; Per Car Qty:2;
Rob