I'm concerned with what you said about the filing the rings.
Having a tight, but not too tight, ring gap and properly shaped ends with no burrs is critical.
I think he is using new rings, but I think he put them on the forged pistons and then Returned those pistons and is using stock pistons, so that’s why they are being reused, not “used” lol.You should not be re-using rings on a fresh hone. You're begging for excessive oil consumption and possibly even smoking if you do that. You should be able to order new rings from Ford.
Hell yea it will. Put some long tubes on it while you are at it!It will all be worth it when you hear your engine roar to life.