filler neck modification

I cut my filler neck in half and welded in the restrictor/trap door from a 2001 Toyota Forerunner. Then I welded it back together and ground down and dressed the welds and had it replated. You can't even tell it's been modified from inside the trunk.

I've only filled the tank twice so far. Both times it clicked off only when it was full. I topped it off just to prove the tank was full and spilled some gas. But if I had trusted it I would have had a perfect fill and zero spillage. i haven't noticed any signs of gas leaking out of the fuel tank while driving, but I haven't driven it much yet either.