The earliest Subaru EJ series engines used a 6mm fitting (known as a 'barrel' or 'trunnion') at the engine end of the throttle body. Typically MY90 - 92 Legacies. All later models used an 8mm version. When buying a throttle cable kit for your VW conversion, you need to make sure you order the right kit, especially if the engine is a 1992 model. Also, you need to make sure you are measuring the correct throttle pulley. The inner one is always for the throttle cable, and the outer one is always for cruise control: Subaru throttle cable pulley and cable end diameter