To summarize – any 1960-66 Chevy or GMC hood will fit any 1960-66 Chevy or GMC pickup, Suburban, or School bus with the full length hood. Chevy and GMC hoods share essentially the same sheet metal except for the front section. Early Chevy hoods have twin pods while the GMC has an open screen in front. On the later style hood Chevys have a somewhat smooth front panel while the GMC’s have a stamped intake scoop. Both series of GMC hoods have unique parking lights that are not common to Chevys.
The 60-61 style hoods use a latch with the release handle pointing down, accessed in the gap between the hood and the grille support.
The 62-66 style latch release handle points toward the driver side of the truck and is accessed in the rectangular hole in the front of the hood.
The latch panel that bolts to the grille support is the same for 60-66 with either style hood.