the fix for the fill is the restrictor plate to add more back pressure when filling up.
get the smaller size
but the total fix was restrictor and a new super nice sealing gas cap so when I make those hard turns a tank that ss really full doen't slosh up and leak out the cap. 3 years of the one friends car and 6 for another. but he did have ot replace his gas cap since it started leaking down the quarters on hard turns. I think he bought one of damnraiders cnc gas caps the have a neoprene o ring To help seal the tank.
link is here Stop spilling gas