Re: Need to build a Box for Gmc Sierra Ext. Cab.
allot of ppl use sketch-up design software... Easy to use and nice layout.... The aeroports will work well... I ported an enclosure for a 93 ford ranger regular cab.... 2.5 ft3 tuned to 32 hz... took up a little leg room since the seat was moved forward to accomodate, but it is possible... I used elbows to turn the ports so that they did not run into the back of the box as it was only 8 inches deep, and ran the ports out the front of the box between the two bucket seats... Your truck is allot bigger then that, and should have plenty of room to work with... just use your creativity and enginuity.
Different People, Different Ways...