I just saw the listing for the ZSP springs
its actually $210 plus $35 shipping. Can ZSP springs be mated to non-zsp shocks with no ill effect? If aftermarket shocks are required, will it be hard to match those with the OEM retrofit ZSP springs? And who should you look for (in local area) to do the install? The dealer? regular mechanics? Any of the nation wide chain shops e.g. Midas etc?