silver bullet z

I have a 1977 280z, looking for a heater control valve, i've checked online sites and auto parts but they say its discontinued. My Z has the control valve mounted on the heater housing not on the firewall, it has A/C if anyone knows where or who i can contact i would appreciate it greatly. Thanks Silver bullet Z

i have a 1977 280z, the problem is that the brakes keep squeaking. i took it to 2 shops and they said they cant do anything about it, that Datsuns Z's are known for squeaky brakes. Is there anyone that had the problem and what was the solution is. Would love to have a solution, thier driving me crazy.