No build sheets (that would be illegal)
No '73 360 E-bodys
Column shifts seem to be fairly common in '73. (I have 2) including an original 340 car. I have seen others
Reproducing a broadcast sheet is not illegal. It may not be moral, but it's not illegal.
The only means of Id'ing a car (as far as the feds are concerned) are the body numbers stamped in it and it's components, and the VIN plate located on the dash (or door post on earlier cars).
The fender tag, door safety compliance decal, and broadcast sheet are not accepted means of Id'ing a car as far as the law is concerned. A lot of people think that the door decal is, but in all reality that decal just states that the car complies with all federal safety standards at the time of manufacture. The broadcast sheet was supposed to have been removed from the car before it left the factory, so if you find one it's really a sign of lax assembly line procedures!
I agree, no 73 360 cars....the 360 replaced the 1 year only 1973 cast crank 340 in the 74 model year.