jc whitney has some weird stuff. they have some gauges that might fit in the stock bezel.... i might try using
anybody ever use one of these?
http://www.jcwhitney.com/webapp/wcs/...&storeId=10101
For all cars, trucks, vans and RVs
Miles-per-gallon scale shows actual gas mileage as you drive
Easy to install on or under dash
Slash your fuel costs with this easy-to-read illuminated fuel economy-performance gauge. Color-coded zones tell you when your engine is producing the most power for the least gas. Approx. 3-1/2? diam. face. With mounting housing. Complete with Operating/Installation Manual.