Technically, yes, but not without some considerable suspension modification. Not to mention it will look stupid as hell.
yes
you need a door from 73 to 87
You can possibly make it work, but it won't exactly fit. Length and wiring harness will both likely be different. Now, a '73-'77 steering column for ANY GM A body WILL work.
Yes. Any 73 and up Duster or Valiant hood would fit.
the 454 out of the chevelle in 73 had 265 horse.
Yes - the 68-72 Nova hoods, door skins, fenders, quarters fit 73 and 74. The only difference is the front clip (grill, lights, bumpers, front windows).
73
Make the number in the middle turn to 73 by using math and moving the door. See related link for screenshots.
Yes, this should be a perfect fit.
No it will not, 1976 the body and windshield changed a bit and a 73 soft top or hard to will not fit.
will a firewall from a 73 dodge charger fit a 72 dodge charger
Yes