I got in a very nice core and now have a '69 Standard sender available. It has been rebuilt and calibrated. $160 includes Priority Mail in the USA.
IF you are putting in the larger 20 gallon tank in your '67 or '68 non XR7 this is the sender you need.
I can also rebuild and re-calibrate your OEM sender for $90.
Order here: https://desertclassicparts.com/product/rebuilt-oem-1969-standard-fuel-sending-unit-no-core-required/