12 inch subwoofer

I currently have a Polk Dxi 112 subwoofer that is beginning to go out. Its stock ported enclosure however still seems to be good. I was wondering if it is possible to put a different sub of the same size in it to reduce the cost of buying a new sub and enclosure.

I currently have a Audiopipe TXX-AP iPipe 12, 900w RMS, dual 4ohm in a 4cu. ft. box, tuned to 24HZ. The sub is on a Hifonics BRZ-1700.1D mono block, all 1/0ga. wiring, Big 3, powered by a Kinetik HC600B, 850 amp power cell in back and a 1200CCA deep cycle up front. My head unit is a Clarion...

Item(s) for Sale: (2) Digital Designs 512b Item(s) Description/Condition: Like New/Perfect. Playing time total is less than 15hrs. Have to get rid of the subwoofers due to noise complaint Price: 240 shipped. Shipping and Miscellaneous Item Information: Price quoted includes shipping...