For $330 you really aren't looking at much... Remember you need a sub+box+amp+wire+fuses. $330 divided by 5 is $66 for each thing! Obviously some stuff costs more than others tho.
Maybe a Soundqubed 10 or 12 (idk the prices), the smallest Taramps you can find, some OFC (oxygen free copper) 4 gauge, and some 125a fuses, then have someone design you a box on here and then either you build it or someone else builds it. That MIGHT fit into your budget. If you raise your budget to $500 you can do a decent system tho.
Maybe a Soundqubed 10 or 12 (idk the prices), the smallest Taramps you can find, some OFC (oxygen free copper) 4 gauge, and some 125a fuses, then have someone design you a box on here and then either you build it or someone else builds it. That MIGHT fit into your budget. If you raise your budget to $500 you can do a decent system tho.