I gave my brother one of my old subs a few months ago, and he's pretty content with it for what he wants to do with his car/install (WRX = more horsepower than audio)
Like I said, he's happy with the sub, however the current box doesn't physically fit his trunk too well. I'd like to make him a ported box (w/ aeros) to utilize the available power more efficiently (240w rms / 350rms recommended)
The sub is a TS-W106DVC (2006 Premier 10") with these T/S specs:
Revc: Dual 3.0
Vas: 1.829 (Cubic feet)
I would like the box to be a slant back, with a height of 12 3/4". Max top depth: 13" deep, max bottom depth: 18" deep. Variable width to fit volume needs.