Unfortunately, they are incorrect in their printing.
The 383/300 HP in the 1968 A-Body was the same Camshaft as the
383/290 HP {2-Barrel} and 383/330 HP {4-Barrel} {'non' Super Bee and Road Runner}.
But, in 1969 the 383/330 HP A-Body used the {440/375 HP Camshaft and
Valve Train}.