What am I thinking? I don't even know what 'el camino' is, except it's a car.
That doesn't sound too expensive, if the price tag was something like $2k I wouldn't understand.
Putting more money in the audio system than what the car costs looks really silly, you're not living in the car or anything.
I envy your prices.. A pioneer deh-p5500mp costs something like €400 here.
If you know how to do it, it looks nice - though the speakers take up much room

-M