Since you said you are new to Mopars, I wanted to make sure you noticed this comment about the track width change. On my 73 Duster, I converted to 73 up discs as my car was originally a slant 6 with small-bolt drums. The 73-up discs work great but they do move your wheels out towards the fenders a lot compared to the stock drums or stock 72-down discs. I believe the number I have seen is 3/4" per side. Regardless, it's enough of a difference to have clearance issues with tires that previously cleared everything just fine.