Amongst my bits and pieces I have these if anyone is interested. I have never fit them but have a video of them on Simon's car who I got them off
Here is the Video http://www.youtube.com/watch?v=61GoczjKfac I believe they are quite loud
£150 plus postage at cost
Photos
http://i1121.photobucket.com/albums/...ps4f694e4e.jpg
http://i1121.photobucket.com/albums/...psa725da6f.jpg
http://i1121.photobucket.com/albums/...ps095015db.jpg