Junkyard 5.9L Magnum + Edelbrock LA heads build

MOPEkidD-3 said

So what rings should I look at?

I'm guessing i'll have to file-fit them myself or do they come pre-gapped in different sizes?

Is there a gap spec for factory Magnum pistons when adding light boost?

Also i'm guessing when I remove the crank to replace the bearings the rear main seal will be "disturbed" and i'll need to install a new one?

Click to expand...

Q1
Moly faced is all I ever needed. The break in right quick.

Q-2&3
You can get them pre gapped. A file fit would be needed for a specific piston and clearances, like, KB requires a specific gap that may not be a OOTB part. Supercharged/turbo/NO2 require specific gaps as well.
So what are you doing? What do you plan to end up with?
What material are your pistons?

Q4
At this state of the game, adding boost, I would replace and remachine everything for the intended application. Ether you take the JY engine and just run with it or rebuild it stronger and tighter for a much more sound foundation.