nice! brings back memories of when i made a console for my '87 pickup after the bench was torn out and replaced with camry buckets. constructed out of 3/4" pine... i, too, had to have cupholders and settled on woofer ports. the beverage would just rest on the floor. maybe i have a pic of that beaut... well, maybe there's one on the other computer. i'll have to check at a later date. the ports were something like this:
http://www.supplierlist.com/photo_im...for_Woofer.jpg
of course, that was amateur, while this is something i wouldn't exactly consider "amateur"... again, nice work sir.