MakeshiftAudio 10+ year member
AudioRx
x2looks good. wish i had some car audio enthusiasts to hang out with and help out when i need it around here. u might want to reconsider mounting the amp on top of the box tho. i read on bcae.com that its not a good idea. if you go there it explains why. basically the vibrations from the box can shake the internal components loose inside the amp. im not an expert tho. maybe some experts can chime in.
ben
I highly recommend you not to mount it on the box, though if you have to you can just use a footprint layer of MDF etc.
I run into amps with broken fet leads all the time from people mounting directly on the box. Usually this happens to larger(physical) amps that do not have enough board standoffs inside the amp, but it can happen to all of them if the board is vibrated enough.
Hope that helps.