I want to put a component set it the front of my Jeep Wrangler. I can get an adapter to fit a 5.25" speaker and a tweeter mount. I have found there are a lot more options in a 6.5" set (and sometimes better prices). I need a pair of 6.5"s in my sound bar in the rear, can I use the woofer in that location and keep the tweeters and crossovers in the front and add a set of 5.25"s? I don't think the crossover will know the difference, it just send the lower signals to the woofer, correct? If I do this should I keep the speakers the same brand or can I mix/match?