The SVX's radio dash opening is 2-DIN. Older Subaru radios will fit, but newer ones all have a non-standard size larger face that won't fit. In general, radios from these models/years will fit:
- 1995-2007 Impreza, WRX, STi
- 1995-2008 Forester
- 1995-2004 Legacy, Outback
On the later models, the radio's body is still double DIN but the face is larger.
Unfortunately, all of the Subaru radios that have built-in Bluetooth have the larger face that won't fit.
The only ones with aux are model C-124 (used in 2007 Impreza/WRX/STi) and C-123 (from 2007-2008 Forester).
All of those are getting a bit "long in the tooth". You'll probably be happier with an aftermarket radio.
See this PDF in the How-To section here:
WRX Stereo Install
Also see this thread:
Finally a Subaru 6 disc for the anal- no cutting required
If you do go with an alternate OEM Subaru radio, I can still put together an SVX-to-14 pin adapter harness:
SVX fwd to Subaru 14-pin reverse.jpg
Contact me by e-mail. If you send a PM, include your e-mail address.
Here are pictures of a few different Subaru radios in SVXs:
2004 Impreza P129.jpg
2002 Impreza P123.jpg
2003 Legacy P122.jpg
2000 Outback P120.jpg