hell no!!!! i doubt ill be doing 143 im about to those some of these sweet basterds in my car.. i have a pair here out of danis car,. http://www.google.com/imgres?imgurl=http://static.howstuffworks.com/gif/productImages/1/4/00000116614-PioneerTSW301RRawCarSubwoofer-large.jpeg&imgrefurl=http://products.howstuffworks.com/pioneer-ts-w301r-raw-car-subwoofer-review.htm&usg=__6XIkzws-eMEtvl-t8Mx8MHESUus=&h=400&w=400&sz=22&hl=en&start=8&zoom=1&tbnid=Zvr-YpOvQ0pJfM:&tbnh=145&tbnw=145&ei=fpYoTrbnIsm1tweX0YS8Cg&prev=/search%3Fq%3Dpioneer%2Bsub%26um%3D1%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26biw%3D1024%26bih%3D625%26tbm%3Disch&um=1&itbs=1&iact=hc&vpx=354&vpy=132&dur=1142&hovh=145&hovw=145&tx=106&ty=124&page=2&ndsp=12&ved=1t:429,r:1,s:8 Come on jonny boy, who you bullshittin here. i metered your car last time i rolled thru town and i am positive you will be doing better than 143s HAHAHA You do need to build a different box if my opinion means anything.