Sub model is RLP204, $69 at sonicelctronix.com
Amp is PBR300X1, $159
Punch PEQ (small equalizer really works) $29
The polyfill tricks the sub into thinking there is more air space in the box than really exists..dont how it just does.
set up is really easy, I dont recall the wiring color match ups, do a search on the site there is somone that put together a good write up on the install of the amp using the stock wire harnes...the signal is taken from both rear speakers....
pair this up with the infinity speaker upgrades and the difference is great. BTW I used the blue trailer wire clips to splice in the back door tweeters to the leads into the rear infinity speakers, worked great, didnt have to llose the tweeters with the speaker upgrade. jusst clip them to the speaker lead right befor the connection to the speaker.