[SkylineNXS]

Hey hows it going, i have pretty much the exact same truck, and am about to do the same thing, gotta have some bass though, no doubt. The stock bench is up high enough (without the adjuster bar thingy under there) that you can fit an enclosure underneith. U should be able to get away with building an enclosure outta 1/2" or 3/4" particle board and there is such a large market for subs out there and there are plenty that have low profile designs. You can look at ultra low proflie ones (but normally they cost a bunch) or if u just look at the specks of most 10 inch subs, they have a depth of around 5 inches, whihch should make it. Careful planning under the seat is obviously needed, and may i recomend 2 subs, one for either side for equal bass all around. Like forcedinduction said, 6x9's right by ur head isnt the greatest idea, in my 72 the po put some there, and all you hear is the left one, its not the best. Keep em up front. What i plan on doing is possibly getting some newer model buckets and building a console / enclosure between the seats, where there is ample room for subs and an amp. My tanks in the cab too and i dont plan on moving it anytime soon, so ive been thinkin of other stuff...sorry for the long post...have fun...

BRAD