I've thought about fitting a fuel level sender before. I've got a Suzuki one and as far as I know, all you'd need to do to fit it to the tank is drill a hole and weld a shallow nut on for the sender to screw into. Not sure how easy it wiould be to calibrate it tho.
REgina: Check out the "Koso" web site for aftermarket clocks, I bought the ones below a while back and was pretty impressed with the quality, a lot of other makes I've seena are a bit "Mickey Mouse". The nicest looking aftermarket gauges i've seen are made in Germany, I think the company is called "Motogadget", they're not the standard type as above tho but another console type.
