if the amp is to powerfull for the sub the sub will be very slopy !!! as there will be to much power
my bros useing a alpine mrd-m301 for to subs and the sound is unreal
http://www.letsbuycaraudio.com/main/amplifiers/16/712
u also need to think bout ohm how low do u want your bass !! if you dont just want all the low bass dont get any think under 2ohms !! u will find that a 500watts amp will be quite good for a 450watts sub as thats prob not at its max wattage !!
hope that helps
as for wireing kits brosusing a Q-DOS "competiton pro" qawk8 (suitable for amplifiers up to 1000watts)
hope thats a little bit of help