RE: fuel gauge fix?
After you unscrew the plastic cap and get it off, the entire assembly just lifts out. You'll be able to see the tabs once you get the unit out of the tank. All you have to do is bend them a little bit more so it makes good contact. I used a dremel tool to brush all the years of "gunk" off of the contact points as well.
Things to make sure of: You might want to take a marker, chalk, or something else and mark how everything sits in the tank. Make sure you put the unit back in the tank in exactly the same position it came out of...When I put my unit back in, I was off by about 1/4" and the float wouldn't come up because it was hitting the side of the tank. Also, make sure you get that "giant nut" back on TIGHT! If you don't the system will leak and besides not passing any state inspections, the smell will be very annoying plus the fuel won't stay in the line after you shut the truck off.