Best method for putting a Hemi in a 69 Dart

You got that right autoxcuda.....whatever you decide, factory k or other, drop the car body down over the Hemi....... not the Hemi down in from above. On the Stage II Hemis remove the steering column / shaft and valve covers.....a little wiggle to slither by the valvetrain and you are in scratch free.
aftermarket front end, one piece motor plate, for and aft limiter, race balance engine when machining. very little vibration if any. full auto for street duty, dana 60 for strength. tubb it while building, you aint gonna hook up a 572 hemi on the street.