Pretty straightforward if you have a Dremel. You'll need some fairly thick stick pads to attach the bits, as they are hollow underneath. Also, you might lose some paint on the cut edge revealing the metal beneath - I used a black marker to cover it.
Thanks mate. I'm very happy with the coolant from Mayhems. See below for finished pics...
thanks, ill give it a go.
nice job on the rest of the build , its not often you see people managing to pull of a black and purple scheme.