use that chunk of metal off the front hanger, make two square gussets to go into each shackle. weld them up, also I would like to state I said LOOK more 4by worthy, didnt say be more 4by friendly, I guess I coulda said to make it look better he could to a 1/4 elip, but I dont see anything wrong with running long shackles, honestly geometry says that a long shackle at the right angle could make for one hell of a soft, long travel spring out of anything.