We put TEINs and camber kit and just with that it is as close to neutral as you can get on FWD. People reported good results with Eibach, I suspect just stiffer VW rear springs ($60) will fix most of the roll too. There is an UltraRacing rear sway bar which gets most of the roll and it doesn't cause understeer.
Replacing rear springs or installing rear sway bar is less work, just saying.
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View my fuel log 2015 Mirage DE 1.2 manual: 46.4 mpg (US) ... 19.7 km/L ... 5.1 L/100 km ... 55.7 mpg (Imp)