Well, the shop i work at is a pawnshop/audio shop....so we take stuff in on pawn and buy all the time. There is a local shop (name will not be mentioned) that has an "expert box cutter"...we get stuff on pawn that he built very now and then.
I just though i would show yall one of these "expert built custom ported boxes"
I measured it and its 2cuft tuned to 35-36hz. Enjoy: