Will,
Mine is a C280 1997. I changed every rubber in the front axle, motor mounts, transmission mounts, shocks.
Result: Outstanding ! New car feeling!
I am dealing with this in order to decide if I go for the rear axle. (nothing replaced there)

Bob,
Please post your findings. Yours will be a great case to analyse.

Engineer,
You have a positive situation in an older car. Something to observe. The seals are not a big surprise. Mounts... how about them looking good but being too dry/hard ?

Jorge
PS: Engineer, I think the better statement for condom management is:
- Either buy them on demand or take advantage of volume discounts buying black condoms...