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07 hemi 1500 rear end problems leaf spring perch''s swap 2 a 2500 rear end
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No doubt the extruded aluminum pieces probably aren't advisable. However, there's still plenty of cast iron options out there (which is what OEM is) that are less than half the price.
That said, TGC is one of the few places I was able to find blocks that are a full 3" wide.