To answer your question,,yes,they are correct for a LA 360. Yes,,the ports are better than the small 318 ports and will flow a bit better. Have you already purchased them and what is your budget because there are way better cast iron heads available if you want a stock appearance or even better aluminum heads that will shave off at least 50 Lbs. and perform better as well. The drawback with stock LA 318 or 360 iron heads is the open chamber. If you have a zero or near zero deck height I would take advantage of that. Those valves look like the original 2 piece valves,,I wouldn't run strong springs or an aggressive cam with those. EngineQuest Iron 360 Heads with LA intake bolt pattern or Eds 360 Alluminum heads,,an Eds RPM AirGap intake and a 770 Holley Avenger would wake that 360 up Chuck! lol no pun intended