What does everyone think of the 2011 Wrangler stereo system. I have a 2011 Wrangler 4 door unlimited 70th anniversary edition with the Infinity sound system. I think it sounds really good but I do have the Alpine system that I removed from my old Explorer. I have super 6x8 Alpine speakers. Will these fit in the new Wrangler. Should I consider replacing the factory(infinity) speakers with the Alpines?