New fuel sending unit help.

I have To agree if it's accurate use it and in the future if you put a fire breathing engine in you'll have the sending unit covered for the fuel delivery.
If it was me , I`d rig up an extra vent w/ it, you`ll thank yourself every time u fill up, w/ no burping or splash over. I did w/ mine , and it works better than my new one did in 1968 !!