Mazda RX3 street car | Sequential gearbox upgrade

We’ve long been a fan of Ross’ savage little Mazda RX-3 street car. The car has dipped into the 8-second zone previously, but in order to improve consistency and reliability, Ross has recently made the switch to a Samsonas 6-speed sequential gearbox. With no cutting of the factory trans tunnel, the box has been adapted using Promaz Automotive’s new to market light weight billet CNC bell-housing which is manufactured in house. The same Promaz 13B bridge port rotary engine is still in place with power transm