I test fitted the adm ae86 fuel pickup and sender in the new jdm tank.
It fits great, the pickup is squarely aligned with the lower regions of the baffling, and the sender swings freely and misses the extra baffles too. Makes the swap easy.
One problem that needs addressing is the lack of a drain bung. Before it sees any fuel in here I will definitely be having it fitted with one, as who wants to take out the tank to get rid of bad fuel? Not me.