I was in your boat this summer. I went with Taco Tunes and could’ve happier. I kept my stock head unit which saved money. I replaced the door speakers w/ Polks and put in JL audio subs w/ a sound ordinance amp, all of which I already owned. I needed an amp for the door speakers so I purchased the Taco Tunes amp that goes under the passenger seat and line out converter from Taco Tunes. They explained the entire instal process for me and helped over the phone with all my questions. Top notch service. Sound system is awesome and is so much better.