What are the speaker sizes for a 97 mustang gt???

I am just about to buy a 97 mustang gt and i am in the process of replaceing the factory speakers. first off does anyone have any opinions on the mach 460 ?? And also what sizes are the following speakers
Front door speakers=
Tweeters=
Rear deck speakers=
and does the mach 460 already have a 10 inch sub in it. I heard that the convertables do but i am not sure about the gts. Thanks for your help!!