facelewis

Does anyone know the part # for the grommet used to run power through the firewall? I'm thinking it's either:
Plug, Blind (25mm) - 91606-SK7-003 or
Plug, Blind (30mm) - 95550-30000

I'd measure it but I'm not sure if it goes by O.D. or I.D.
Can't seem to find a suitable diagram on oemacuraparts.

Thanks for any help. Also thanks to the amazing wealth of knowledge both here and on DIYMA, I was able to install some ID CTX components up front. Everything sounds great, but I'm afraid I may have been bitten by the bug... I think a MiniDSP is up next.
I really appreciate everyone who's taken the time to answer questions on installs or document the steps taken in their own installs, you guys rock.