I drove and worked on heavy trucks.They all had a warning about welding on the flanges.We filled holes in the web all the time.These where trucks that where used,and where also shown.When we welded on the flanges,to lenthen the frame,we fish plated behind it.
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70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires
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