Cost your looking $55 for the coil (3.5" coil), $30 for a cone/surround adapter to fit a 12" cone in there (good luck finding a 13" cone), $20 for the cone, $20 for the spiders, $10 for the leadwire, $4 for the terminals, $5-25 depending on what dustcap you want. Then you got to ship it both ways
OR
I have a lnib pioneer premier deh-p510ub with all accessories and the box, got a bunch of woofer parts, got some smaller amps laying around. Pm me if interested in any of that