I don't think there are any other companies offering a full clio supercharger kit apart from k-tec. As above you would have to get lucky and get a 2nd hand kit off someone which usually go for about £2.5k. Or put a kit together yourself which would still cost over 3k
I bought a full kit inc' gen90 ecu with a damaged charger a few months ago for £800 not knowing whether the charger could be repaired and usuable. Luckily, after buying a new housing and pulley from rotrex, i've bolted it all on and had it mapped, its running sweet. It was abit of a gamble because I could have ended up having to buy a brand new rotrex!
Fitting was straight forward enough, did it all on my driveway, plugged the ecu in and off it went!
It drives ace now, it drives just like an n/a but with more power throughout the whole rev range
Where did you get your boost hard pipes from or were they still salvageable from the damaged kit ?