I have the Fox Box with 2 Punch P2d4 12's, on a Punch 500.1, I have had the box several year, 5 to be exact , I only see new reviews but no long term use of the Fox Box reviews the box fits perfectly, I see a lot of complaints about the seat won't fold down, the seat is not high enough, they sent the wrong spacers, no they sent what is needed to make this box fit perfectly nice and tight. I know there is something in the box call install instructions, if you know how to read then there should be no install issue, if you can't read, I am more than sure Fox Acoustic will not laugh in your face, but they will take the time to walk you through. Thanks, Fox, for an amazing box.