Originally Posted by Firefighter 1406

You can fit a 6.5 in the front doors of these trucks because I have them. I made some adapter plates to cover the hole out of plexiglass and then cut out enough to get the 6 1/2" speaker to fit into it. It's not pretty but those are the speakers I had at the time and didn't feel like buying new. The 5x7/6x8 "ford size" are much easier to install. I think the pos and neg on the speakers would only matter if you have a big sound system with lots of power and amps and crap. That seems to be what I remember.