ey guys! I have a 1977 280z which used to have the California specific emissions tech. I recently "refreshed" the engine after I got it. I completely redid the fuel tank and fuel system from the tank back going as far as to replace all the hoses for the vapor tank as well.  I am just going to list off new things. rebuilt fuel injectos new fuel pressure regulator new fuel damper fuel lines fuel pump rebuilt fuel rail rebuilt head and new