We can make the chromoly one, we actually did have one at one time but i t was so heavy (25lbs) no one really wanted it, it took out 2 diffs at the 2010 LSX shoot out. We can make it at time you want one with in a day or two. I would really suggest the 3-1/2 aluminum as it has already been tested part the strength of the stock diff and 2 different 9" kits. We cn also still make the 2 piece chromoly units if you prefer. here is what we have to offer
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