Probably the ZD Racing Shocks, just pick up the axial bushing linked in the first post and some nitro fuel line to adjust the height. Not sure what wt shock oil you should use as I have no personal experience with those shocks.
I used 45 weight front and 35 rear with the stock ZD Racing springs on one Granite and on the other I went with a spare set of Tekno SCT springs I had (Green front and Black rears I think) and went for 45 weight all around. Both perform well but the Tekno spring equipped Granite is the better performing of the 2.