Pre 73 hood on with 73 up front end.

It's more then just the point you'd have to blend, the 70-72 hoods are straight (horizontally) also, the 73 and newer have a contour following the headlight bezel also, some grill (filler/mods) would also be required.

Ok, so instead of removing the hump in the middle of the grill, add to the dips on each side...hmmm

Go get some more sleep. LOL

um, yeah, not gonna happen :)