You may be aware that there are issues with the gearbox mount failing under hard acceleration and track use and Renault have taken steps to improve this over the years.
I was aware that there were at least two types of gearbox mount support but I until recently I hadn’t seen them all together. Parts book lists 4 variants and I have now seen three together.
Left is the basic GTA version which just bends, the middle one is the one I had powder coated for my white GTA and I had thought this was the A610 version with the triangular extension that goes inside the mount to stop if lifting. This was until I saw the much stronger version on the right with thicker plate, more strengthening and a revised bump stop.
This picture shows you how it all fits together.