Quote:
Originally Posted by HawkBrosMav
I guess I don't how that wording changes anything with the way the rules were written before... It already spells out what can be done and what can't be done as far as "alterations" so that would fall into "unless otherwise specified" meaning that all the heads that passes last year will pass this year just the same..
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"unless otherwise specified" refers to the NHRA approved aftermarket cylinder heads.