Auto Parts: Computer auto parts, mitsubishi 3000 gt, general purpose computers

Question
Where can I purchase a computer for a 1995 mitsubishi 3000 gt?

Answer
    If that's a turbo model you are in a real pickle.  You will have to get the old one rebuilt, I would think.  I would call Cardone in Philly and see if they can do it.  If they can't I'd ask at the dealer.  If it's not the turbo, then I know that Cardone can get it done, and you can deal with them through any decent parts store (they will not deal directly with the public).
    Now, if you don't have an old computer and need to get one to replace, say, a stolen one, then a salvage yard is your best bet.  If you are feeling adventurous, you could go to Megasquirt, buy one of their general purpose computers, and adapt it to work with your car.  I would consider this a last resort, though.