CUDA 5.5 for Power Linux installation

Hello there,
I m trying to download a copy of the CUDA Toolkit 5.5 for Ubuntu 14.10 ppc64le. My understanding is that the C/C++ CUDA programming support for POWER8 was first introduced with toolkit 5.5.

https://www.ibm.com/developerworks/community/blogs/fe313521-2e95-46f2-817d-44a4f27eba32/entry/how_to_develop_nvidia_cuda_applications_on_ibm_power8?lang=en

However, from the https://developer.nvidia.com/cuda-downloads#linux-power8
Only the CUDA 8 is currently available.

Legacy release https://developer.nvidia.com/cuda-toolkit-55-archive
does not list the ppc64le version.

Does someone knows where I can find it?

Thank you.