The only thing that is hard is getting the stock bushings out of the hog head. Then getting the Spohn poly bushings press in. If you have the right tools it still can and will be a bitch. Other then that the rest is easy.
x2 as they said above. The bushings were a bitch to get out. I didn't have a special tool and it took awhile to get them out. I did it on lift which also made setting the pinion angle easier.