I installed Oz Audio 6.5's in my doors, they are DEEP, after I removed the plastic basket,(BTW:use a sheet of plastic behind the speaker to keep it dry!) I used a piece of 3/4in particle board like smackdown said, to space it away from the window. If the 3/4 in isn't enough, make another 1/4in to stack it out, (or you can space the window track back, but that's a little more difficult). The rear deck is simple, take the three 10mm bolts from the top, after removing the 3 philips screws from the trunk underneath the speaker. Trace the metal plate onto a piece of 1/4in particle board and cut whatever hole ya want.