This works GREAT velcro'ed to the area near the tach. It is currently calibrated for an aem inline wideband. If you find it needs to be calibrated to something else they will do it for you. I don't think they even charged more than shipping.
Same as this:
https://www.dynotunenitrous.com/stor...?idproduct=387
Its red and very easy to read. Its great if you want a low key interior.
$70 shipped.
you can see it in action:
https://vimeo.com/106844468
