How much head milling = how much more compression?

Okay, so assuming it is a stock engine, with stock pistons, at stock specified deck height, at stock 8.4 compression ratio, how much of a difference would cutting the head 0.060" make ? That's an 0.080" cut with a 0.020" thicker head gasket.
Took less than 5 minutes to find the compression ratio on this motor today. 8.8:1

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