1.5 liter only in the Clios dci's just tunned and different bits in the engines.
Mods depends what you do in theory 300hp+ could be done with of the shelf bit just need injectors.
65 with a remap = 85 or so
80 with a remap = about 105
100 would be about 125~130 with a map.
Depends who maps it though and how they do it.
MOFO you can be our guinea pig mate buy one and see if you can shoe horn the 2.0 DCI 16v in there, ta.