Who makes the best? ........It seems like EVERY single one I've bought lately is a piece of crap ........fuel gauge doesn't work, the gauge pegs if grounded, and I've a run good ground from the body to the unit.....

The one I bought for a "A" project from Jack's works fine. I'm not sure who makes them for him. It's a 1/2 inch one. I just bought a 1/2 inch sending unit for my 71 RR from Van's (couldn'e get a 1/2 inch for that body till now). Anyway, I hope that one works when it's together.

Don't know... I shelled out for a NOS original a few years ago (probably not 5K miles since), and it quit last summer. Have not checked it out yet

I just reconditioned my tank and put a new sending unit in. When I fire it up, if it works good I'll let you know.

I guess I'm one of the only ones that's had issues with sending units not working???

and that's telling.....you......what?

I need a good 3/8 one also. W all the reported probs I am going to take my OE 5/16" one & solder in/swedge a 3/8 line which'll let me get the bottom of the line (the horizontle bend) parallel to the tank bottom & just off of the bottom (no sock). Plus I filter each 5 gallons of gas I put in & there's a surprising amt of crud coming right from the filtered gas station pump

Well, I finally got around to putting some gas in my tank and I believe the unit I bought is going to be pretty close. I put 5 gallons in out of a can and it showed just a little over a quarter tank. I will be driving the car to a station tomorrow and adding more gas in increments just to see where it reads, I'll let you know.

This is where I got mine.

http://www.classiccarautoparts.com/about.html