engine build ?,lifter oil galley tube install

i have two mopar numbers p5249508 and p4120603
one is a drill set and the other is a tube kit to install in the lifter oil galleys. i cant find any info on these parts and need to know what it takes to install.

the reason to install is with hi lift roller cams it prevents the lifter from exposing the oil galley. i dont have that big of a cam but the solid lifters with the correct clearance will bleed off to much oil pressure.

can someone help with this and as well tell me if i am getting this right.. it is a solid roller 576/582 lift cam
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