75 duster to 72 demon swap

I'm currently converting my 75 duster to a 72 dodge demon. Had a few questions about the process. How do I make an earlier model front bumper bracket work on the duster that has just a one bolt mount for the shock bumper bracket. I also was hoping to find someone who could help me swap the tail light panel. I’ve read the previous forums but I am looking for some more current info. Thanks