Yes mate. I am planning on having a diff fitted this winter as the slicks will ruin a standard diff. I'm thinking a full plate Gripper diff as I've used them in the past and know John @ Gripper.
Just got the car back from RS Four Ashes. Floyd the master tech there has done a great job on the car, funnily enough he's worked on the car quite a few times in the past and he knows Renault Sports inside out.
I had the 4-2-1 manifold and a new K-tech decat fitted along with the crackle, pop and bang map which sounds epic with the decat. The car has real drama to it now and a proper rasp when you open it out. While it was there Floyd also sorted my horn out and switched off the air bag lights. Very happy with the service.
SOUND CLIP!!
https://www.instagram.com/p/BL9M2kah5ZG/