CUDA 6.0.37 with Windows 8.0

Hi. We are currently using CUDA 6.0.37 in our Graphics Development Environment. The test system runs Windows 8.0. We are unable to locate a CUDA 6 driver for Windows 8.0. There is an installer available only for Windows 8.1 on the CUDA 6 homepage, which would not get installed on our Windows 8.0 test system. Please confirm a solution to this issue.

Tata Interactive Systems.