Kosmos-3/3M upper stage engine missing?

[Codelet]

Hi,

I was recently looking to replicate Kosmos-2 and Kosmos-3M rocket in my RP-1 progression and got stuck.
For Kosmos-2 I could find a configuration of RD-119 engine. But the upper stage of Kosmos-3 and Kosmos-3M - 11D49 aka S5.23 (http://www.astronautix.com/1/11d49.html) I just cannot find at all. Which can be of course a problem of me searching badly :)

I understand it might be hard to replicate every single engine in the world, but this feels weird :) I mean lower stages are all there and description says "this one is used on Kosmos-2" or "this one is used on Kosmos-3M" and the upper stage is missing :) could some one at least bring light if it is just not there or point me where it actually is

Best Regards