Okay, I found a few more links. The analog style from my first post seems to be the most prevalent type out there. I was interested to find a site that sells used inclinometers from the old Toyota 60 series LandCruisers. I was thinking it might fit in the blank panel on the overhead console, or maybe above the stereo/CD player on the blank where the nav-screen would go (I have an SE trim w/o nav or any aftermarket upgrade).
http://www.acmejeepparts.com/products/94050_00.htm
http://www.4by4connection.com/clinometer.html
http://4x4mods.com/Product/Support/8...install01.html
http://www.sor.com/sor/cat177.tam?anchor=#177-48