20v vs. MC head flowing

[Alexander van Gerbig]

    But port a 20v head and see what happens to that gain over a stock MC
head.  Compare a ported head to a ported head and stock to stock.  Anyone
have a ported 20v head to compare to a ported10v head?

Alexander van Gerbig -- '90 90q20v -- '88 80t (R.I.P)

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