Also, since no one mentioned it, Wolf EMS makes the Wolf3D. I bought one, and I was going to put it in my Mazda, but things change.

I haven't checked their site in ages.
http://www.wolfems.com.au and
http://www.wolfems.comUsed to be different sites, the .com.au being the manufacturer's site. Seems they've got their shit together.

I still have mine in the closet. It's a superb piece of kit, and I would recommend it to anyone.
Also, AEM bought them out a bit back. Looks like (from the PICS) that they are using the AEM case, but I know not whether they changed over to the AEM board. That, and they dropped the "3D" from the name. Now, it's Wolf V500.
If you can find a Wolf3D for sale, I'd pick it up. You can check some of the mazda rx-7 forums or some porsche forums.
here is one:
http://www.rx7club.com/showthread.php?t=740021I picked mine up new from a US dealer for 1200, mind you this was like 4-5 years ago.