NOS Full Groove Main Bearings

[Draggin]

I have my 426 Hemi apart. I have NOS Main bearings (3) 2448380 (1) 2448379 (1) 2448381
My question is on the Number 2448379 it looks and measure the same as the 2448380 but I can't find and info on

that number, is it a superseded number 2448380

 

[Outsider]

My parts book lists the 379 bearing as for the #1 position specifically, not a supersede.

 

[Draggin]

Thanks.
The original bearings all showed the same markings on the back side except the rear main which showed .001