Some sites say they are from early Z's, some say from late. I have a set that have Japanese symbols stamped in, but I have no idea how old they are. I am tying to sell them, because they are one of three sets I have.

They are from early Zs. There's currently a pair on ebay with the bid at $60 and Buy It Now at $100.

They often sell for less than that depending on condition and if the mounting studs are still in place.

Dennis

240Z's had fiberglass head light nacelles {sugar scoops} until the 1973 Model Year. After that they were steel.

FWIW,

Carl B.