I'm glad to here you liked them. Mine are non coated. It was a combination of weird circumstances, they've had the inventory, minus drop down flanges for a week. I asked them last Thursday to ship them separate, but the order went out some time today, Finally! Nothing happens fast enough when your hot rod is spread all over the shop floor looking at you. I have pulled to replace the radiator and water pump, and with all that extra room in the engine bay, I don't want to put the cooling system back together until I install the TriY's. Can yo offer me any tips on installing them? My car is fully assembled with an intact engine.