73 dodge dart TTI headers

I know there's a lot of posts out there about TTI and the install process and issue with routing and mostly with the Z-bar. However, could owners of 1973 Dodge Dart (Sport) 340/360 4-Speed (Manual Steering) totally stripped engine, no bells or whistles - please stand up and let me know what headaches I'm into. I'll be ordering TTI Part # 340AW2-C5. The engine is out of the car and I don't want the Exhaust shop chewing me a new *** because he needs some part!!

Thank you!