Best place to start would be to get in touch with someone like A5 salvage
they are renault specialists. But tbh, it's not going to be easy to find. Are you hoping for power gains?
You have to look for one of the F4R-780 oder F4R-700 or for one of a F4P engine, but this works only if you have a mecanical throttle (no e-gas) and you have also to search for such. With the electric throttle, all from the 1,4 16V to 2,0 16V have the same diameter, it´s little smaller than 65mm.
This is the comparison between my old TB and the bigger F4P/F4R one:
I have it installed already for 7 years...