I was shopping around yesterday and came accross this one:
http://sm.crutchfield.com/App/Produc...GT420U&tp=5685
According to the site it'll fit in the SVX, but I haven't bought it yet. I've got more expensive issues to tend to with my SVX first before I start doing cosmetic improvements. I do like this one though, since it's silver/red color, and I drive a Red '96. Color coordination ftw
There was another thread for LCD screen 2 DIN units on here too, ridered777 has a pretty sweet one.
http://www.subaru-svx.net/forum/showthread.php?t=43826
He got his as a display model, so there's not much info on model or part number, but it's a Jensen 7" LCD 2 DIN. Jensen's newer units are probably a bit better than his. He mentioned it didn't have a USB hookup, but the new one does apparently.