knocking
Hi Beeson,
It sounds more like your BALL JOINT, which will mean a wishbone change. Easy to do if you can get car up on a hydrolic lift (like i can) and will only take you 30-45 mins per side., and yes you are advised to change as a pair !
Not likely to be a shock, unless you can see oil leakeage from the shock.
I had same problem not so long ago (2weeks) changed shocks n springs, still knocked, so new wishbones.
Ebay patent (cost pending quality) or if you can afford, and want to keep the car for a while then OEM
Andy80sxtra