The 317s would be great for the turbo. If staying NA I would go with a set of CNC 243/799s. They are worth the money and you will be happy with the results. I'd talk with whomever custom ground your cam to nail down the head specs.
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69 RS LS3/T56
68 firebird vert LS1/4L60E
67 RS LS2/T56
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