Jimmy G the JB weldmaster! Please tell me you no longer have my fabbed metering rod caps up on your wall of shame AKA as your garage door. Sending units that read correct are a rarity (mainly replacement ones) so if yours is OK there I would drill a hole in the circular flat & solder in a nipple. As said if going with another sender you'd want its dimentions (line shape/float arm configuration) the same as your good one in there now & have the lower horizontle bend of the line just off the floor as there is always some water etc that is heavier than gasoline & you dont want that in your carb (& an occaisional tank siphoning to clean it out). Why are you dropping the tank? there's been issues with replacement sending unit lock rings & I'd get an original one & good visual for bent tangs & likely that'll take care of it (the leak) plus a good circular gasket under it. Tell ya what, send me back my caps & I'll send ya a good OE lock ring!