[bigblock73]

I just did the swap last night on my 77. As stated, you will need the center support/latch assembly, and the outer triangular shaped brackets that sit near the headlights. You will also have to remove the vertical mid grill mounts because they will not work with the 73/74 grill. The 73/74 core supports have them built into the support, where the later models they are bolted in. This will be OK, as you still have the center and outer grill supported. You will also need to drill the 3/8" holes for the outer brackets, but they are located with center punches from the factory. The outer brackets will need to be mounted with nuts and bolts, as there are no welded nuts in this area on the backside to bolt them in to.

I'll post finished pics later.