I have a 1996 328i convertable i would like to ad some lows. Do you know of any one that makes a 10" sub box that will fit in the center of the back seat ski hole

not sure if that ski pass hle is big enough to fit a 10". I got Tweeter to build me a custom box to fit in a sepecific part of my trunk. they can build you a box to pretty much fit anywhere you want. they did it for about $80, and i highly recoommend them

Yep, try the ntx web site.

I have a 1996 328i convertable i would like to ad some lows. Do you know of any one that makes a 10" sub box that will fit in the center of the back seat ski hole

A 10" sub won't fit there unless its angled steeply. That space is barely 10" high. I'm built a box for 2 8" subs. It's 30" wide x 9.75" high x 6" deep. Check out the pics in my gallery.

look good hows it sound