I saw this radio offered by Porsche for old cars. But it only works in Europe.
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So I got to looking around and found this from JVC. The JVC KD-NX5000. It has been discountinued but I have found remaining stock on the net. I picked up a new one for $259.00. I then got another one used for my Lotus for $200.00. The Porsche one is 700 Euros.
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I think it's a nice update without having to cut the dash up.