Any of you racer guys with M54 motors use Bigserts and head studs instead of stretch bolts. “ I’m asking for a friend” a possible project pending that may include a turbo.
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2001 x5 3.0 (sold with broken motor), 1990 e30 M3, 1991 318is, 2002 325i, 2008 335i Dinan stage 3 6 speed,
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