 With the demise of Supertouring, the AER-tuned SR20 was used in the short-lived World Series Light, a junior division to the Nissan World Series.The AER P25 3.5 liter V6 is based on the production Nissan VQ35 engine as found in the Nissan 350Z.It was extensively re-engineered, originally for use in the Nissan World Series).