Not a fan of fangs. IMHO, it is well worth the work to pu the shackles through the frame -- or you might actually put the hangar ON TOP of the frame and use longer shackle legs... you can outboard, inboard, or whatever you want by using wider shackle bolts and spacers... You might also use your original high-in-front setup and just plan on turning the knuckles to fit the knuckle incline that you need (and get whatever pinion angle you want in the process), IMHO having the springs tilted back is better than the alternative.

Randii