Need To Know If This Manifold Fits Rb20

[ORIGIN]

Hey guys recently purchased this manifold being told it was for an rb20/25 but my brother(mechanic) has told me that it could be for an rb30 his not 100% sure since we dont have an rb20 around right now i need someone to verify this for me if they wouldnt mind?

[winstonusmc]

Not really sure what that flange is, but its not an RB20/25 or even an RB26. This is an RB20/25:

Kinda layed out like this / / / / \ \ RB26 is / / \ / / \

Quick google search revealed its RB30

Check this RB30ET Gasket:

Edited December 26, 2009 by winstonusmc

[ORIGIN]

damn i was hoping that wasnt the case, cheers winstonusmc for clearing that up. Anyone in brissy interested in swapping this manifold for an rb20/25 one in good nick? Id say this is for an RB30

[R31Nismoid]

Ye that aint a RB25 flange