Any 2012 Hemi Upgrade Advice

I bought a complete drop out 5.7L Hemi and 5 speed auto from a totaled Charger(pursuit) with 44k miles.

My 69 Barracuda has been mini tubbed, narrowed rear, frames tied, Heights Rack & Pinion front end.

Looking to do head/ cam/ exhaust upgrades. Any good recommendations? Can my existing heads be ported ( worth it?). Thanks in advance