Yes auto sifters are not allowed in NHRA nostalgia. RPM shifters not allowed, but air shifters , driver controlled is
And just to confuse things NHRA Comp Elim can run RPM shifters EXCEPT IN THE A/ND & B/ND FED nostalgila dragster classes.
Another exception between Heritage and Comp A/ND & B/ND is in Comp you can run a MSD Grid system, but not allowed in JrFuel.
In our JF car we just use a manual shifter, KISS .
Hope this clears it up.
Jon