Uprated Cheetah Atar9K50?

I was wondering if anybody knows anything about the upgrading/uprating of the SNECMA ATAR 9K50 fitted to the Cheetah fleet in South Africa. a few years ago I read in a journal that certain engine componants were re-engineered and improved on this engine. I was browsing IPMSSA and found this:

“During 2002 Cheetah D no 859 was used for development work with new intakes as part of “Project Recipient” to increase the airflow through the original Cheetah D intakes. The air intakes feature modifications to some areas of the intake shape to improve the airflow. Basic outer shape remains the same. The main feature of the “Recipient” upgrade is the fitment of an up-rated 09K50 engine, by improving a number of individual components of the engine. The fitment of the 9K50 engine was as a follow on project to feasibility studies carried out by DENEL in 1994 as a private venture by mating Cheetah D no 844 with 836 (a Mirage III RZ which received a 9K50 engine in a separate upgrade). Increased airflow and the up-rated engine give the “Recipient” upgraded Ds a significant increase in performance.”

The picture shows a new curved splitter plate. Picture courtesy of ipmssa.za.org.