Magnum on nitrous!?

So after my teen ate its cam I found a Magnum 360. It's currently at the machine shop so I have some time on my hands. I'll be using the stock bottom end with new rings and bearings. My question is with a 125-150shot max what piston rings should I go with? Hastings has a set with a plasma-moly coated ductile top ring for around $80? Opinions on these? View attachment 1715552579
Double check the application of those rings. I thought the Magnum rings were different sizes than LA, and these look like LA sizes.
I may be wrong, but double check before ordering.