mixing years

I use what ever good parts that I have that fit.
Right now my 73 duster has new upholstered front buckets, rear seat and sail panels are from a 72, door panels are from a 74. Kind of a Frankenstein but it look good.
Front clip and doors from a 75.
Motor 72 340 with a trap door air cleaner.
833 and 8.75 out of a 70 Dart.
Parts are somewhat hard to find for 40+ year old cars, so use what you have, drive it and enjoy them.