To have non factory wheels on the excel safely - ie without redrilling alloys which can weaken them, you have to go custom and thats big £££ - RRHANS has a nice set IIRC correctly, its not only the PCD to consider but the offset, and remember the excel was setup for ride and handling with 14/15 wheels, putting bad boy rims on an excel will probably cripple both, as well as potentially looking "tacky".
BUT - despite that the car is yours and you are free to do with it what you like
