Technical Scat crank 350 sbc

I have a brand new Scat crank 0714 do i need to run the enlarged chamfered bearing, or stay with the standard chamfer.. on both main and rod bearings

 

Not familiar with that number.Is it 9000 series or forged.the forged ones usually use chamfered bearing .The cast uses regular bearing.

 

Its a cast stock replacement so I guess I will stay with the regular bearings