I have a 360 I need plug recommendations for. It's a 10 over 360. 10:1 compression at 2400 feet above sea level. It has 2.02/1.60 valves, .484 purple shaft with around 3.50:1 gears. I'll be running an msd ignition box and distributor. It's in a 1963 Plymouth valiant convertible with an automatic. I'm looking for recommendations for spark plugs for this car. What do you suggest, or what other info might you need? TIA.