You damn A well that the NHRA can accept or decline
any or all or the SFI rules or suggest anything they
want... they just go with the WHOLE SFI package..
I'm sure if SFI were to test 5 year old nasty looking
belts they would come up with the SAME failure rate
as nice looking new or 2 year old belts.. but companies
pay money to be SFI certed