Hi all , I noticed today that my p.s rear shock the cup part that the spring sits in is totally rusted through and near to collapsing going by import car parts its 500 pounds for a new set the rears have allways knocked and have been thinking of coilovers from time to time has anyone any test of hsd coilovers and if I went down that route were is the best place to buy them or b,c. thanks paul.