My wife wanted her 73 to look more like my 71 so I added the gills, recessed the side markers, tucked in the bumpers and painted the grille to match. Now she has a real 71 Cuda but doesn't want to part with her 73. And by the way, it's fuel injected with a 4 speed overdrive automatic and cruise control. Gets 25 mpg and drives like a new car. She won first place in the 73 up class at the Branson Super Summer Cruise a few weeks ago. If you want to make your 73 look more like a real 71, it's going to cost quite a few bucks. 71 parts are not cheap. PG Classics has most of the parts that you will need. No one makes the rear tail panels yet. We love our 71's and wouldn't sell them for any amount of money. If you need any info just e-mail me.