Very nice install! Although, I would consider this slightly above the middle upgrade wise 😉 After seeing yours, I'm looking forward to my next audio upgrade since I just got an Audison AP F8.9. I think my upgrade will fall somewhere around yours cost wise once everything is said and done. I do like your use of the factory sub location. I have debated whether to get a custom enclosure done or just use the loaded sub I already have for now haha