So I didn't know where to drop this topic so here it is... But im wanting to build a blowthrough in my 05' impala. I cant seem to get this figured out right. ive built sealed boxes but never ventured into this type. I got all my base numbers and all but lack the computer programs to make sure its all gonna be where I want. I just got three kickers cvr 10's. if anyone is willing to help id really appreciate it. I can post all the numbers I can work with.