Hi,
I would just look for the bottom sliders, they seem to be in demand and prices are high
NOS ones on fleabay some time ago £250
Autojumbles are the next bet, where are you in UK?
Telford off road show next weekend or the usual Kempton Park jumbles ???
I would then buy the rest new, as mostly the stanchions/bushes and seal holders are well past it
HTH
John