69 Notchback Mod Top $5000 Illinois. Marketplace NOT MINE

Thanks, where did the 340-S production numbers come from? Also, "BH23P9B were on all of the coupe models." Not sure what you mean by that?
The BH23P9B were 340 coupes whether Formula S, 340-S, or Cuda. Only the packages on the fender tag would tell you what model they actually are though Cuda models had twin scoops on the hood and some models had argent grilles and some black grilles.