Aftermarket Dash for 70-71 dart

The only thing that I can't figure is that the gauges are are "stacked" one above the other and I can't see how that would work in a 70-1 dash frame which has a very narrow opening for the instrument cluster. When I wanted to use a similarly shaped dash unit in a 70 Dart race car, I had to swap to a 73 and up dash frame which has a much taller opening...