 2000 mustang vert speaker help.
I am helping a friend install new speakers in her 2000 mustang v6 vert. I know the size is 6x8 but my question is will i need spacers for the front door speakers? I know when i did my car(not a mustang) i needed spacers but after looking all over i cant seem to find a definite answer. I am hoping you guys could help me out. TIA. as far as i know she doesnt have the mach 460 system. She had an aftermarket HU put in and there were no problems with the system after that, it seems that with the mach 460 when you put a new head unit in it causes problems. However just to be safe how do i check? | 
