Best method for putting a Hemi in a 69 Dart
Off the shelf TTI headers for these are a big advancement. Before you were looking at having a custom set made.
Elephant ears that you put in to make sure the motor is exactly per TTI instructions would be the least expensive route. Stock k-member, manual steering, and disks are fine.
You could even buy the weld on hemi mounts and k-frame spacer from S&S in Pheonix AZ and have it look 68 super stock style.
Drops in like this....
For the trans, you will be cutting and fabbing the tunnel extensively and the trans/torsion bar crossmember.