Rear End Shocks...Repair, Change, Replace?

[datapumper]

I am the proud owner of a 1995 S500 which has given me a great ride for 190K Miles...so far. My problem is the rear suspension is starting (is) losing all shock absorbition. There is clunking and chunking and at time squeaking. I would like to eliminate the self leveling non ADS shocks in favor of something standard. My search online has left me blank.

A few questions:

1) are there issues with this change?
2) do the Hydrolics or what ever pressure system that is connected attach to other systems?
3) are there special parts?
4) am I stupid and should just bring this to the dealer (GASP)?

Rideability is not effected on the up and down the road...where I notice it is in the potholes, road resurfacing or otherwise surfaced challenged biways...

Thanks in advance.