Price range to buy and get install One JL Audio W6-12in subwoofer with ported box, JL Audio 500 1v2 amp?

And All brand new JL Audi door speakers+ everything else that goes with it! I have all that in a 2004 Grand Cherokee and I'm getting a new car and want to put that same system into my new car. Is that system old? And if so what would be the price to get the newer JL 12in Sub and amp? I love JL Audio and from being in other peoples car's with Kickers ect I see why i prefer. Thanks for any help!