Leaf spring front eye placement

Actually... Neither. Usually it should be placed 10-15" off the ground. Higher will give you more anti-squat, lower less. And the spring eye height should be mostly level. If you make both the front and the rear adjustable you can use the front height to get it into the general area then the back height to fine tune it and the ride height. Just remember that too much anti-squat will REDUCE traction and actually cause the rear tires to unload and the car to hop during acceleration.

Hope this helps.