Hello my orig 68 dart slant needs a tune up. many guys want to get their hands on my engine BUT when i ask them a few basic questions...i can tell they dont know enough for me to employ them. like --ya gotta remove the metal ring from the spark plugs before install...and what about the tubes...? i live NORTH BERGEN-NJ 07047 -just north of the linc tunnel. Need Local Guy... id appreciate any recommendations! Thank you!