71-74 Charger Front Valances What are the differences year to year???

[1970 RT/SE]

I have a 71, any differences year to year? if so can they be modified to work ?

[Nacho-RT74]

71/72 and 73/74 on exterior are the same and will match perfectly between years with fenders. Diff are on length of outer brackets ( the ones to frame rails ) and some light diff on rear edge meeting with radiator core support, but not a big deal.