hi i just pick up 2008 lexus isf black on black today i was wonder does anyone recommend a good place to do custom box sub in maryland?

^^^^^
+1
I would like to know as well.

My suggestion would be the 4080 box. It will accommodate a 12 in sub. I'm friends with the guy that builds these boxes and can probably get them for around 300-400 bucks. If you've ever seen one of these boxes in person, they are worth every penny!

For local work you could talk to The Audio Connection on Joppa Rd. in Towson.
I have had them do 3 complete stereo installs for me in the past and all have been great.