What size of speakers can i fit in the front 2 compartments, and what size in the back 2 compartments, I know I can fit 8" subs in the back 2 but i'm not running a system just yet, if you can let me that would be great, thank you

Hasan

 

why would you put subs and a big huge system in a 7 anyway???

 

You can fit 8's in the back.. but what i did was drill some wholes to fit some 6' 1/2's back there.. and in the front you have to go with the lil tiny 5 1/4 speakers.. the driver side is easy to put in.. but there is no space to add back the stock grill.. and on the passanger side.. i zip tied it for now and took out the stock box thing..

 

I just replaced all of mine. I replaced the 4"s under the dash, got new holes drilled for 6.5"s in the rear tower and 6.5"s fit in my door perfectly. No interference from the window or track. You could measure or just test fit. i just got lucky, I did neither. They could be shallow speakers too, though. I dunno.
Either way, I got the 4-6.5"s and the 2-4"s and since I have a Corbeau bucket, I had space to mount a 50amp 8" Bazooka Tube behind me and the stoarage bins. Hidden, blends in, good response and relatively cheap. The total cost for me was ~$180 ($100 for the Bazooka and $80 for all the speakers) You just have to know where to look for good deals.