TBH I would be amazed if a LAD car produced any more power than standard on any rolling road (other than maybe LADs own with its rubber needle).
I went for one of their infamous conversions on my old 106 and even in conjunction with a Pug Sport IK (race proven and around 8 bhp on its own), and fully decat system + manifold I only saw 136 bhp rather than the 160 they claimed. It is amazing they are still able to make such claims and get away with it.
Steer well clear good Clio people, you have worked hard for your money so spend it wisely