I have a 2012 Wrangler Rubicon (2-door) with a 730n radio with Infinity speakers. Most of the sun protector had flaked off, I scrubbed the rest off a little too strenuously and there's a little bit of scratching. Now every once in a while, I hangs up on whatever source I'm on and won't change. Great news! It means I'm in the market for a new head unit. Recommendations? And when Crutchfield says "some modification required", how big a job is that?