There are 2 different options available depending on which oil pump you are using
Large Hex: 30mm (or 1-3/16")
Backing plate (Alloy or Steel) [Alloy is the most common option]
however we recommend upgrading to a full main stud kit from our options above in order to utilize peak performance capabilities
For Gen IV LS engines (2005+)
PRP Birrong 'Steet Fighter' Black Kids Hoodie Vehicle Make_Lamborghini There are 2 different optionsTurn the street energy up a level with the PRP Street Fighter Birrong Automotive Hoody a bold collab piece built for cold nights, track weekends, and anyone who reps R32 culture properly. With a detailed, full colour back print inspired by iconic arcade fighting visuals, this hoody combines Birrong Automotive, PRP, and the unmistakable silhouette of a street ready GT R into one standout design. Loud, aggressive, and unapologetically JDM. Made using