I've got one of the fleet mechanics at work who's going to rewire my whole truck (the wiring is a mess from the PO, and I don't get along w/ electricity), and I'd like to replace my gauges, but add a tach where the fuel gauge is. How hard to do, and who's got the best gauges now. I used to use autometer when we built mustangs. Its great to be turning wrenchs again lol....Dave