mine seems pretty good/accurate in my 68 RR with a new B-Body fuel tank, straps & larger supply S/S sending unit, I got it from Mancini Racing probably 4-5 or so years ago now... I'm not sure where or who, they get them from, but I put 5 gal. in, it goes up 1/4 tank that's pretty darn close, when it says empty I better be pulling in the garage too... there is a way to change the resistance in the sending unit, But I'm not really sure what it is, I can't remember anyway... I don't ever buy the cheapest anything for my cars thou, I'd rather pay a little more get, Made in the USA quality the 1st time & much less hassles or doing stuff over & over, spend even more money, because I wanted to save a few buck on some cheap a$$ parts, sometimes you get what you pay for.. not that any of you guys, did get a cheap part... good luck
