how difficult would it be to put a couple subs in my '03 GT with the Mach 460 audio? would i be able to use the stock speakers and amps?

 

Yeah no problem as long as it is connected right!

 

definately get yourself a new head unit from somewhere. Anything but the stock one.Then you can still run stock speakers/amps (if you really wanted to) and still have good hookups on the back of it for your amp and sub outputs.

 

i have the 6-cd changer HU if that makes any difference

 

yeah i have the 6 cd changer
with the shaker 500 system

and then i added 2 12" alpine subs!

sounds perfect!

 

i got 2 12s in a bandpass box with an alpine amp, and an apline hu if you want to buy them