That's why I included the gasket kit which has the OEM rear bumpstops and also the price from courtesy for the rear shock is the entire assembly including bumpstop. So the price for a new OEM/ProKit setup could be about $100 cheaper if I don't get the redundant parts but still the price is about that of a descent coilover kit. And the coilover kit has greater adjustability than getting KYB AGX's. Also AGX aren't that great. If you really need the adjustability of the shock then you'll want to adjust it from the shock tower not the shock body.
"The 300ZX Turbo is a dance; it's a song; it's rolling, roaring automotive art. There is no color that doesn't suit it. There is no mood-lifting chemical substance it can't replace." - Automobile Magazine