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NSS – Nostalgia Super Stock
Will follow NMCA Rules.
1/4 mile, Index, Sportsman tree.
Sportsman Ladder
ET – Any
Dial – Class Index
Engine – Gen 2 Hemi only, single 4 bbl OK.
Electronics – Air shifter allowed. No delay box.
Tire - Any
Tech Items – Driver and car must pass NHRA guidelines for the speed run.

Am I reading this correctly? NSS Engine is Gen 2 Hemi only. No B/RB?

In theory, there is no difference between theory and practice. In practice, there is.