replacing drum shocks, whirlpool washer

I have at least 1 bad drum shock (there are 4 total). Since they are $100 each, how difficult of a job is this for an amateur? Any special tools needed?

I have worked a few times on this model, but not on the supports. The service manual does not even discuss it, but it does show you how to get into it.

https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/07e2c9ebdcf04a3085256f38004f9b84/$FILE/WPWASHER1.pdf

I do not think you will find it a difficult process, but be sure and try to determine why the support broke.