Just bought some 35" BGF/MT's and they rub pretty bad in the front so I'm "forced" to do a 4" lift on my 74 Jimmy and have decided to use Tuff Country springs up front and a shackle flip rear. I need an educated opinion on weather to get the EZ Ride or HD springs. I have a heavy front bumper but have no idea how heavy. It's made of an 8" peice of channel iron 74" long and topped with 1/4" diamond plate the brackets that attach it to the frame are 1/2" plate. I would like to put a winch some day. I looked at the spring rate chart on here and saw that the HD's are about 100 lower than others springs but I have no idea what all that means in real world terms. It looks like the HD's will be fine for my application but would like some info from those who really know. Also, where's a good place to get a 4" drop pitman arm?