Wow lots of answers !
Well the engine fits, I drove one on Saturday, that´s how I decided to go down the Turbo road, even though I´m more of a NA guy myself. So it fits, currently has a CLio 182 gearbox in the dealer´s car but it´s too slow (the gearbox, not the complete car). mine will be fitted with a sequential and a complete mechanical LSD to put the power down. Also the dealer´s current setup is done on a Freeway Twingo, so with normal tracks and everything, the RS will be a better base to fit 300hp obviously but still, I will fit a Clio Cup front suspensions and steering setup to allow for a wider track and more camber and adjustments everywhere, and also bigger discs too so i can get it road legal.
The cage will be fitted at the same time obviously, full cage from front to back over the suspensions towers and everything.
The rear track will be widened too, using a Clio rear axle or buidling something with independent suspensions, not sure which way I´ll go yet.
It will also get plexi windows and flat underfloor pnales with rear diffusor to add some downforce to the lady so it stays on the road!
Well, anyway, the beginning of the next stage of the project.