Originally Posted By ss/la
stock per nhra rules is supposed to have the correct journal size, super stock is allowed any size journal, that being said yours may vary


I looked in the rulebook more and I agree:

BLUEPRINTING
Permitted per NHRA Specifications available from NHRA
Technical Services Department headquarters. Stock, factory
OEM components (unless otherwise specified) must be
retained and remain unaltered (i.e., connecting rods, pushrods,
crankshaft, etc.).