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Curious to what are the major benefits are ?? And do you just put the same number of shims behind the a-arms?? Wouldn't it be easier to just rebuild the old unit??
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1972 K5 - LS3/408 (595Hp) -6L80e-One Tons with 4.56, 20'' Beadlocks with 37'' rubber, full TMI interior, JL Audio .....
1971 CREWMAX Build.....at body shop for couple more years 
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