Ok so I bought this: Pioneer DEH-4900ib and 4 of these: Infinity Ref. 5022i's For my 1992 Mazda Protege. I have never done my own system before and could possibly get an Infinity amp in the future. How easy is putting in the speakers myself? I have already purchased the wire harness and face harness along with an iPod connector. The receiver unit should be easy for me assuming the antenna cable will work with the unit. I am only worried about the speakers. How much trouble is taking out the old speakers? What about putting in the new ones. I know it varies car to car but can anyone give me some general steps I will have to take. Will I need anything else to use the new speakers on these old cables? Thanks for helping out a car noobie!