same hood variation as with the #73 commuter.
short and long raised hood with different style labels
http://img78.imageshack.us/img78/1506/mercuryfirechiefsf592oo6.jpg
different size wheel wells and label variation. something looks odd with the suspension , although the front fender from tire to bumper is a different length.
http://img112.imageshack.us/img112/6940/mercuryfirechiefsf59sf1.jpg

I like the one with the yellow labels like those of the Galaxie, too.