I have a Centroid sender installed in my custom tank (actually 2 tanks cross-connected). It works "ok". I have custom shaped tanks, so the Centroid sender was the easiest straight-line solution. The gauge is bouncy when fuel sloshes back and forth in unbaffled tank. But if the reason you want a fuel gauge is to warn you if getting low on gas, it does the job well enough. I've had it for over 20 years, so it seems to last.