SR exhaust gasket(s), help - tried search

[runyun]

Alrite guys..

leak in my exhaust side somewhere...
So, I did a search (parts cross-reference) and I find out:
(searched on zilvia, 240sxforums, heavythrottle, etc)

*Exhaust Manifold Gasket 91 B13 Sentra SE-R with 2 liter SR20DE
*4 Hole Turbo Manifold gasket Z32 300ZX TT T25 gaskets
*5 Hole Turbo Extension Gasket Z32 300ZX TT T25 gaskets

Fine.. so I go to my Nissan dealer.

THERE IS NO 5 HOLE exhaust gasket. No one lists a part number so I can't check that way. The dealership showed me their screen.. and I couldn't find any 5 hole exhaust o2 extension/turbo gasket. The picture and part listed a 4 hole gasket for the turbo/o2 extension for the 90-96 TT 300zx.. so I pick that up.

I go home.. and sure enough, the o2/turbo gasket to my sr is 5 hole.
What am I missing here? Can anyone shed some light?