I have the Bose package in my 01 GTP. The whole system sounds great when turned up. Only problem is the rear speakers arent nice like the front. It appears only the front speakers are Bose and the rear are some delcos or something.

I would like recommendations to upgrade the rear speakers. I also have a 4 channel Alpine amplifier that I currently do not use. I noticed the car already uses one though. Could I use it for the rear speakers? Should I?

What speakers should i throw in there? Any setups/upgrades you recommend?

Thank you!