does anyone know of any websites or outfits making 140 mph speedo's for 87-88 turbo birds? i have looked around and haven't seen anything over 110 MPH, if anyone knows of such a thing it would be greatly appreciated if i could be informed
You can occasionally find one on Ebay, but they're rare and expensive (some have gone for over $500). Or you could make your own:
http://www.foxthundercats.com/140speedoarchive/
i'm looking into the overlay (3M part plus ink work) and the resistor change out.