http://www.volfenhagaudio.com/woof_pg/woofer_hps.html 2 10" subs came with my truck. I checked the prices for them, Amazon has them for $70 each. They sound good in my cab. I need to comb through the audio system and update some things. Nothings worse than to have a decent head unit, two amps, a crossover, 2 subs, and 4 blown speakers providing the mids and tweets. I was thinking of getting the 4x6's for my blown ones.