Help! Do I cut it out??

Rob64GT said
On my 65 you have to notch it out about 1/4" in a 4" section.

I've got a 65 Barracuda 273 factory 4 speed and the crossmember isn't notched. Also parted out a 65 Signet slant 6 factory 4 speed and it wasn't notched either. Might have to be notched when using later year stuff?