Someday I will be building bigger and better fuel thank. Presently sending unit is side mounted and it was leaking. Probably from some kind of small European car. One time low fuel warning light was working on the gauge and it was very convenient. Looks like we normally use top mounted sending units today. I would like to hear a recommendation for most reliable combination for my new tank. Warning light will be cool to have. But apparently they're not available, or I don't know where to look. Thank you!