Need 955H part number help

I do not have a d330 book, getting ready to put head back on 955h 60a 4038. Went to the local cat shop to order head gasket and rubber oring seals, the two old reliable parts guys are gone, one retired and the other passed away unexpectedly, no good help left down there. They didn't know what a 955h was, anyway I still need a part number for head gasket, the 13 large orings and 2 smaller orings. problem is they tell me it only takes 12 orings, I still count 13 large and 2 small, is one of the large under a different part number. I would like to get these ordered but can't with out good part numbers. thanks for any help you can give.

Head gasket 5M5837
13 large o rings 6B6225

My book is showing 2 different smaller o rings
one 7B2419 and one 8M7754

Hope this helps.

Ther 955H engine is in the 955H parts book, using a D330 book would be a mistake although you will find the head gaskets are the same, the reason Cat dealer staff can't find the numbers is because a machine of this age is not in the SISweb computer system and most no longer have the old microfiche parts books in use.

The 2M8149 and 8M0674 heads have the 13 water directors. The field replacement head 2S9004 uses 12 water directors.

Forgot to mention. The part numbers I listed did come from the 955H parts book. So they should be correct.