underseat sub perhaps, will be better than 6x9 without hacking of the parcel shelf
something like http://www.jaycar.com.au/Sight-%26-Sound-Car/Car-Speakers/Subwoofers/Under-Seat-Active-8-Subwoofer/p/CS2286
LOL harsh
i would say, paint the centres instead. too much shiny metal doesn't suit a modern(ish) car like the R32, its more of an oldskool muscle car thing
that car spent a bit of time at powerhouse museum as an example of 90's modding scene. not sure if its still on display now
http://www.powerhousemuseum.com/previous/cars_hondacrx.php
so the choice is...
fully built track ready 180 for 15k with 290rwkw
or
hacked up n/a 180
rusty with a cheap paint job
slapped together with random secondhand wrecker crap (and still incomplete)
...for 16k
that's shallow scratches. good machine polish will remove them without taking too much clear off
the thickness can be measured but needs a $700 paint depth gauge, no point buying unless you are a pro detailer