ya i have a nbs reg cab and i tried getting to my rear 4x6's and gave up after 3 minutes, i want to get a set of those infinity 4x6 plates that have a round midrange and a separate tweeter, next best thing to a component system, anywho, i have pioneer 6.5's and 4x6's and they sound ok with one 12 but my 2 12's are comming tomarrow and i might have to upgrade mids and highs