Additions of the spec changes from NHRA on 5/16/17. 2015-17 Dodge Hellcat added to the Class Guide, 378-600 Hellcat engine added to the Tech Specs, a new intake manifold spec for the 09-10 345/370/392 engines, and new intake manifold spec for the 09 354-540 DragPak engine.
http://www.nhraracer.com/content/gen...622&zoneid=132
http://www.nhraracer.com/content/gen...621&zoneid=132