What dashes are interchangable?

I am contemplating going with an aftermarket gauge cluster or something to replace my stock instrument panel and my car is a 71 Dart. Rocky Mountain Dashes went out of business and apparently Redline Gauges doesn't make a panel for 71 model year given the hole in the dash itself is too long and narrow for most aftermarket gauges. I am not up for shelling out the cash for a whole custom made piece and I don't have the work space or skills to really take on making something from scratch that will look halfway decent. Can I ditch my 71 metal dash for another year like maybe a 72 or 73 and use that? Any issues that would prevent it ?