What's needed to fit a 440 Six Pack under stock hood

Dartnut said
Some use 1'' spacers between the K-Member and the frame for extra clearance.
I know the '68 Hemi Hurst cars did this, so you have to think about front end component geometry issues if you do this mod.............

Looking at that picture it looks like they did some cutting on the inner bracing on the passenger side, left side in the picture.