I have a Rocksford fosgate 450s class d amp, pushing 2 12" pioneers. The specs on the subs are 400rms and 800 peck. I'm asking $400 this includes the block which is made our of 3/4 MDF and completely reinforced for no solid bass. I also took my 2g base board and cut a piece of MDF to fit so the bost can mount and wont slide around. I have a 4g wiring kit if you need it also. I've had the system for only 3 months everything is still in great shape. I have images at http://members.cardomain.com/killermog located on the 3rd page. Thanks email: Danielkmog@hotmail and IM: killermog :thumbsup