Need help with ground strap for fuel sending unit.

I need a fuel sending unit ground strap for a 69 Coronet R/T with 3/8 fuel line.

There are two available: 3.75" and a 6-7" strap.

Which one do I need?

Also, are they specifically made for the 5/16 and 3/8 fuel lines?

Thanks FBBO.

The fuel tank ground straps will work on either the 5/16" or 3/8" lines.

If the rubber hose connecting your sending unit to the main body fuel line is a short one, the 3.75" ground strap would work. If the rubber hose connecting the sender to the line is longer, you would probably need the 7" version.

FYI, the original Chrysler ground straps were all 7" long.

thanks Rick for that great info!