Likely 383 swap-parts advice requested

As far as a 400HP parts list, MoPar Muscle did a 383/400, 400HP build a while back with a really mello cam, M1 single and a large TQ, headers.

It was a 9.2/1, .030" over 383, stock 906's, 3 angle valve job. M-1 intake, 950 HP Holley, 1-7/8" headers I believe. Stock rocker gear, and it broke 400 HP with the stock Magnum cam grind. A big hydraulic Comp stick made a bunch more power.