Awesome quality build, I cant wait to hear it!!! I was actually going to build something very similar last month, everyone liked it, but a few people... the only negative thing I heard about this design is that there may be "loading issues" with how I had the subs positioned on the box. Pioneerpimp from caraudio.com made the same box and didn't like it, but his was tuned to 47hz... http://www.caraudio.com/forum/showpost.php...mp;postcount=73 Here's some other designs that I was thinking about, design D looks good if you put the subs side by side so they load into the port at the same time... thats the chitty thing with blazers, they only have 37-38" between fender wells and the Outer Mounting Dimensions of most 18's is equal to 37.3". This makes it hard to mount the subs side by side... http://forum.realmofexcursion.com/showthread.php?t=47254 If things don't work out I've got my original 14cuft box/wall re-tuned from 27hz to 35hz just sitting in my garage and would love to hear how the new SSA 18's sound in my re-tuned box using Johns Blazer since my ride is outta commission Here's the design I put together for the one I was about to build... Design C: 53.25" x 37.5" x 16" Port is 14" x 14.5 port length 25.5 inches 203 Square Inches 12cuft 35hz