Air Shocks 76 Dart Sport

I think you will run into trouble trying to do the axle flip. It's not a good idea. I believe you will end up with "too much" lift. Also you need to keep in mind your pinion and drive shaft angles. Air shocks already change those a little and an axle flip will put too much angle there, IMO. I think you will have better success sticking with the air shocks, or going with a different leaf spring. An axle flip usually results in about twice the lift of the diameter of the axle tube. That would be about 6".