You will probably spend around $1200 for just the bass with all the extras like wiring, audio control piece if you use the factory head unit. This is my 2010 Camaro
2010 Camaro I bought it in April and got it July 2009. Drove it one week then tore it apart for 6 months. I used JL Audio their amps have 86% THD rate, but that was last year. This Year Alpine came out with their high end amps which is like 94& THD hardly any distortion. On the factory stereo system, I blew the right door speaker, so I would upgrade your speakers with a good set of components. Alpine has a 5 channel amp. 4 channels for speakers and one channel for a sub. JL Audio has the best true woofers. I would use Alpine amps and components, JL Audio subs. If you want to spend a lot of money Audison is the benchmark for car audio.