Here's the 2017 contingency registration form: https://www.yamahamotorsports.com/supersport/campaign/contingencyform_roadrace
It is WERA E Superstock rules. You run ESS for contingency all year - must run at least two of them to qualify for the R3 Challenge at the GNF. That race will be gridded based on regional points in ESS and will be only qualified R3 riders.