Redline makes a dash blank for the 71 dash. You can make a non ralley dash work with a little action. It's not a bolt in but it can be done.

56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d