Aluminum bumper brackets, a new offering

I appreciate this info more than you can imagine. I have been trying to figure out the differences in these years of 74-76. I am trying to accommodate all of the options for my customers. Thank you!
I can agree with his information. My 74 dart front bumper did NOT have the crash shocks however, the rear bumper did. I also found that on my 74, the bolt holes on a pair of your 70-72 dart lined up perfectly on the frame rails. I was swapping over to a 70-72 glass bumper.