Fuel sending unit - 1969 Impala - 3/8" w/return
I've recently lost my gas gauge and figured the ethanol, over the years has destroyed the sending unit. So I ordered one from rockauto and began the process of swapping them out. First thing I notice is that my 1969 Impala 350 4bbl has a fuel return line.
I can't find a single store that seels a fuel sender for that year with the correct part or any knowledge to why a 69 had a return other than vapor lock.
Any help would be appreciated.