442 was an option in 1972, not a seperate model. If he does not have a build sheet, there is no way to tell it is a true 442 unless it is a W-30 which has a 'X' in the VIN for engine.
There are some things that every 442 with a 455 should have:
cutout bumper, dual exhausts and chrome tips
special hood, body-side and deck-lid striping
Heavy-Duty Front and Rear Stabilizer Bars
Boxed rear lower control arms
And the VIN should match the engine number...heads should match the year. Find that here
http://i122.photobucket.com/albums/o...es/Head_ID.jpg and
http://i122.photobucket.com/albums/o...s/Block_ID.jpg
C.J.