Re: Center speaker possiblility?
I would say if you've already done everything, leave it. I assume you originally had the "base" system (non-Alpine), w/o a center speaker originally? I'm sure you have a place for one 3.5", but you'd probably need to buy the new center dash piece with the grill. You'd also need to add additional processors/amps to your existing setup. In the end, it wouldn't be worth it. The OE center speaker is summed from the L/R dash speakers. Doing this aftermarket would take a lot of money, processing, time alignment, etc.
2014 Durango Limited AWD in Granite: Premium Package, 2nd Row Captain Chairs, 2nd row Console.