If you Dart has the original 9" Drums, than no.... The spindles are very small, and if I can today I'll take a picture of the original 9" spindles, and the 73' Valiant Spindles, alot beefer. Does you Dart have Power or Standard Brakes, not that it makes a huge difference. Also, to use the new Spindles, you'll need new Upper control arms from a 73' or up. This site has some great Tech Pages which describe this upgrade in great detail.