Just to point out that when the car is running 100% its bloody brilliant fun and they are quick, mine is 279hp 250ftlb.
Mine went in for the conversion early last September for the gt2560 plus megane internals, I picked it up in November last year completed.
Down pipe studs coming loose after every couple of days, they still do from time to time.
Turbo to manifold studs coming loose and blowing the gasket out - now sorted.
Miss fire due to new plugs being fouled from over fueling due to turbo studs coming loose causing air leaks - new plugs, sorted.
Banging from the downpipe hitting the subframe, I took it to Powerflow in Doncaster, they revealed that the downpipe was actually resting on the subframe, and that the gasket in the downpipe was too big and didn't fit and was squashed together when bolted up tight causing it to blow - full new poweflow exhaust now, sorted.
I lost 2nd gear totally in the first gearbox, bought a supposedly good gearbox on here which crunches from 2nd to 3rd - on the lookout for a good replacement box.
Dipstick keeps popping out - got a replacement dipstick which didn't help( I'm thinking excessive pressure)
The coil pack that comes with the package keeps vibrating loose.
Cam seal popped out causing a massive oil leak(didn't realise until the missfire) causing engine damage - at Clioturbo in for repairs atm.
All this happened within 10 months of driving and 8k miles(no track days) iv had a few other problems but these are the main ones that I can remember.
Dont get me wrong they are bloody brilliant to drive, and if someone owned one with good mechanical knowledge that could fix things themselves then id say go ahead.