What are the front speakers mounting depth and size, and rear as well....I have some holes cut out in the rear, but I'm having spacers made to push it out 3/4 of an inch, but need to know what mounting depth I had to start with.

I didn't do this BTW, I bought it like this.

 

TTT

 

I'm doing mine now..(I mean literally..right now! I'm inside taking a break..lol). The fronts on my 89 are 4x6..the stock speakers are 1 3/8 from where they mount on the bracket to the bottom of the magnet. I bought Polk GXR, which are about 3/8 too deep. Grrrr....I have a post on the board now to see if spacers will give me any trouble getting the dash pad back on or if anyone has a different speaker to suggest. The rears are 6.5 round, mount behind the sail panel, and go 2 1/2 deep from the back of the panel to the bottom of the magnet. I got infinity 652, which seem to be the same size...of course, the screws aren't long enough now that I have to use the mounting ring, so I can't them in either. All in all...I got nothing done (Oh wait..yes I did...I got all the dust out of the speaker grill on the dash pad, since I had it off anyway. Yee haw...what a productive day!)