If you're spending this much to build-up a 331, get a Fluidampr. I've got one on mine. IMO, saving a few bucks on a critical piece is not worth it.
JMO,
E
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1991 5.0 LX Coupe - 40,750 miles
331 cu. in. / Tremec 3550 / BFG Drag Radials
12.22 @ 114.31 mph - w/1.89 60'
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