The factory Bose system is about 300 watts RMS. In some cases (vehicle dependent) the amplifiers are part of the speakers, I can't say for certain on this model. In any case, all Bose systems use low impedance speakers and simply replacing them with high quality aftermarket speakers is not recomended. The factory amps will not like it, and the system will sound worse. You can replace the amplifiers and speakers together, which will be an improvement if they are very high quality. I would suggest going to a very reputable shop that has worked on this type of vehicle before (ask a lot of questions and make sure they guarantee their work and the sound). Plan on spending a descent amount of money, because high powered, low quality equipment will not sound better than the OEM system, I guarantee you. You will probably need to spend at least $1,200-$2,000, installation include, for a nice upgrade. Remember, exceptional labor will result in years of musical enjoyment and no broken parts. Trying to save $50-$100, will result in a dissaster. Trust me, I've been an installer for 17 years. Good Luck!!!!!