I just removed the gas tank on my 68 and found that it has a defective sending unit. It looks like the previous owner replaced the sending unit. Judging from the part number it looks like it is a reproduction unit bought from the Paddock. Has anyone else had problems with reproduction sending units? Would I be better off spending $145 on a AC-Delco unit from Year One or is the quality about the same? Any info would be helpful. Thanks