MAYBE ... but I doubt it.
The ring and pinions are set up without any regard to noise ( RACECAR ).
Then replaced after each race.
Ford has not made any 9 inch Ford gears in over a decade. Most of the race shops use Richmond Gears ... made in Liberty SC. I have a few friends who work there.
For a street car ... a factory Ford gear is much preferred ... by myself. They always run a lot quieter. NOS ones show up on eBay every so often. That is where I got my last gear set.
DEUCE ... Moderator