ok i have a 98 jimmy wit 2 soundstream t4-15s and the box below tuned to 39hz is what i have now(well its out for the winter to re-do it) i do a 144.5 as of now people tell me to make a bigger port and i agree. i wanna wall it off cause i have alot of mids/highs i wanna put in so my main question is will it be louder than it is now or will it be less loud cause right now it sounds louder compared to the numbers and i like it a few people on here have heard it and said they think it should be puttin up better numbers and i dont wanna wall it if its gonna be not as louder but i really just wanna put all the mids i have so any imput would be gtreat thanks