Yes it can but it will be more than just a nose job. The very ends of the nose
are made different from 68-72 to 73 so you just can't unbolt a 73 bumper and
bolt on a 68-72 chrome bumper. To do it right will require a complete front end.
Even the hood is different. 68-72 is shorter than the 73.
68-72 had GRP glass, the 73 is made of SMC.