Man... I thought about doing this before. How cool would THAT look! Maybe if you could have some metal rings custom fab'd to sit around the diameter of the circular cut-out, it could help save the plastic a bit... if the holes are large enough.

I also thought it could look cool, if there was enough room, to run the tail pipe out the side of the VX, through a hole in the cladding there, or maybe just in front of the rear tire... a dual setup like this would be cool but probably impossible.