Paul Mouhayet has struck his biggest blow yet in the 400 Thunder Pro Slammer Championship, defeating multi-time Australian champion John Zappia in a thrilling final round of the MacTrack Westernationals at Perth Motorplex on Sunday.

The stage is set for a monumental Grand Final later this month (Adelaide International Raceway, March 23-24) following the conclusion of the penultimate round of the 2017/2018 Summit Racing Equipment Sportsman Series at the Perth Motorplex.