Bought an old Works shock from an e-bay seller for an RZ 350. Took it apart, polished the body, painted the spring, and sent the parts to Works in Cali.
Wanted to do it once, so new braided line, bump stop and the whole 9 was done. Wanted period correct, so Penske's and what not were out of the question.
Before it was mounted on my project, an o-ring for the rebound damper started leaking out the oil. Called them and explained, sent it back on my dime, and it was sent back to me on their dime with a new second rebuild @N/C.
Great people to work with. Positive customer service. Expensive, but worth it to me for what I wanted.