97 Expedition

Does anyone know if you can put an aftermarket head unit in one of these and still make the factory sub work? Also, the owner said he checked with a place and they said Polk speakers will not fit in the rear doors but will fit in the front. Is there any truth to this? Thanks

Rear doors have a spacing ring. Mounting depth I can't remember but I installed Three way pioneer 6x8" and they barley cleared. Take a look at the fiberglass section and look at the FG box idea post. I put pictures of the enclosure I built for my wife. Tell the customer to think about that option. bigger sub and better bass. Also it doesn't look half bad RIGHT