ya you can take them rear blocks out, youll just ahve to buy the new ubolts for the 2wds, this should be the part no. for the 2wd ubolts #15002781, dunno for sure but you MIGHT have to order 2 id check it out first

im sure you probably could crank the bars down a little i just done know how much you would actually get outta it, maybe in 1"