Lesjofors makes about all of the coil springs you'll find available.
Check out this link. $49 each
http://www.*********.com/gbproducts/WC/6137-01033032.html?utm_content=YN&utm_term=1977-1983+Mercedes+240D+Coil+Spring+Lesjofors+W0133-1623354+Front+77-83+Mercedes+Coil+Spring+1981+1982&fp=pp&gbm=a&utm_source=google&utm_medium=ff&utm_campaign=********* +Google+Base&gclid=CL2Oj9aCjL4CFS9o7AodHioALg