I'm in the same predicament as Vutown.
I have a 1983 W126 (280SEL), and plans for lowering is already underway. I've bought a complete set of KONI Reds, 4 spring rubber pads (13mm for front and 8mm for rear)and will get my lowering springs in 3 weeks time. I also bought 4 new brake hoses to replace when I do the suspension works.
Does the shock tower mount (as mentioned by Clauser1) and adjustable bushing kit (as mentioned by Peter Balias) applies to my 1983 W126?
Any other elements to look out for? I need to set aside some cash just in case it turns out that I've got more to replace than I know!
Thanks a lot!