# 1 your very best bet is to find a local great SPL chef @ a real car audio shop in your area . they will have a proven history of winning competition systems over the years .
if you want " remote control help "here ,you need to post vehicle info ,exact box size (if ported or vent ,that size as well) ,power wire size , how old/new your main battery is . competition in most sports is about who puts in the most time,money, and effort . 142db is pretty good with the equipment you stated . in competition ,you can't have too much power or speaker . the more the better in most cases .