Alright, I'm replacing my spark plugs and wires. I can't seem to find the RT43TS AC Delco spark plugs at my local auto parts stores. All they carry are RT44TS which is the standard. Where can I find me a set of 43's? Also, I'm flushing the brake and power steering fluids. I've never flushed neither before. How do I go about doing those two tasks as well? Thanks.