have you seen the DOCH pistons?? they are pretty much flat top with 4 valve reliefs cut into em. something like 7cc's taken out otherwise they would be total flat tops. im fairly certain that the 3400 pistons have a 27cc dish.
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2015 Audi SQ5
2000 Alero GLS Coupe - still in the family, but I don't drive it anymore
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