The Engine and trans are from a '10 Challenger, so it is the TR6060 Magnum with a STX Shifter.
These are the headers I used 70305304-RHKR Hooker headers for Jeep, they now make one similar for Hemi Swaps
Headers
Thought you guys might like to see my build AKA the "Rusty Pig" its a 74 Dart with a '10 5.7 with a 6 speed manual. Perhaps it may help a few. I can answer any questions .... I'm still working out the MegaSquirt .... maybe I need some help too.