Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

While i was waisting my time on youtube i saw this and i am wondering how much this modification could cost and if there is any difference at the horse power!

http://www.youtube.com/watch?v=FLaqgo3C-SA
http://www.youtube.com/watch?v=eGS4hQhcGys

wouldnt be to hard to do as its got a dizzy so you just have to remove the electronic ecu etc, and i bet you'd get say another 15hp at most, it wont be alot as at the end of the day its still only a 1.2 8v.