Fuel Sending unit

'64 Cuda said
Here's a 5/16" one that doesn't look like it has a return on it. The return could be pluged if it was there & wasn't needed.

http://cgi.ebay.com/ebaymotors/Mopa...r_Truck_Parts_Accessories&hash=item43a2f1c756

That's the one to buy in my opinion. Reuse your original lock ring along with that new seal and you're good to go.