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My understanding of blueprinting an engine is all the rotating parts are balanced, and all the ports are matched to each other, so there are no rough places in the intake or exhaust tracts, to increase airflow.
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Huck
Subaru Ambassador
92 SVX LS-Tour Magnaflow Exhaust, 5-Spd-AWD 
88 XT6 AWD 5-Speed "Bride of FrankenWedge"
15 Impreza Premium Sedan
15 Crosstrek XV 5-Speed
My 5-Speed "How-To" Write-up
1976 Pontiac Firebird Formula
Current Count of Subaru's Owned.... "70"
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