Radium 8AN ORB Round Internal Hex Plug throttlebody \nProfiles can be used in

\nProfiles can be used in RWD SR20DET engines with solid lifter conversion

But of course some nice aftermarket Titanium ones would make the install look a bit nicer which are listed here:

ARP 2000 Series 11mm Head Stud Kit to suit Nissan RB20DET

this flange can be easily modified to work with 2

Enhance the appearance of your factory RB covers with our custom low-profile oil filler block off

Radium 8AN ORB Round Internal Hex Plug throttlebody \nProfiles can be used inThese adapter fittings are designed to be used in many Radium products including fuel rails, surge tanks, fuel pressure regulators, etc. However, they can be used in any application using a 8AN ORB (3 4" 16) O ring port.