one of the pelicans just recently finished building one. it sounds awesome!
here are some pics:
http://www.dorkiphus.com/porsche/showpost.php?p=104202&postcount=34
http://www.dorkiphus.com/porsche/showpost.php?p=108605&postcount=69
here is the test drive:
http://www.dorkiphus.com/porsche/showpost.php?p=111027&postcount=84
if you just want to get into this stuff, i can definitely recommend jolida amps. not too pricey but they do like to run w/ speakers geared for midrange. don't expect to hear improvements piping guns 'n roses though it either. it's mostly good for jazz/vocals/instrumentals