Jim Hogan was a great help. He installed an aftermarket HU and the empeg together, so our wiring was a bit differant, but it still helped a lot. Click the link in my sig. to see some photos of the inside of the dash.

And congrats on getting a rex! Welcome to the club! I'm amazed how many WRX / empeg owners there are. I've emailed with at least 5 so far. And pick up a smoked lens if you don't have one already, it's a perfect match.