i wasnt sure if the 2020 akra flathead rules where similar to old 2016 rules or the old wka rules it was concerning the vintage 4 cycle stock flathead classes
I would not be too concerned . Ikf allowed more pop up wka was .005 if im not wrong .
I don't know of any rule change in a long long time .
If it was legal in 2016 it should be good today .