i have a 2001 stang with the mach 460 but i think i want to get some new speakers and i have a few questions. i purchased 2 cerwin vega 12s and a visonik 1000 watt amp and i tried everything to hook it up to the factory head unit but there was no way even with the conveter. so i think i will get a new head unit. and also i want new speakers for the doors and rear deck. what are some good 6X8 speakers for around 150 to 200 a pair. and also i have to bypass the factory amps and im wondering since the head unit will be amplified will i notice a loss of power from the aftermarket speakers compared to the amplified factory speakers. also what are the factory amps rated at. also do they make any speakers for that triangle thing on the door. they are like 2 1/2 inch. thanks.