Hi p3990013
I dont know if you like the deltas if so , you can buy an nice , fast and great performance delta designed by Mike Connors "Screamin Demon " dont know how fast you are looking for , but I bet this beby with a correct choose of engine will do feel you a little nervous
http://www.mikesrc.us/
And a video of this beby ( consider that it is powered by TT 46 and stock muffler)
http://www.youtube.com/watch?v=qxrRfL5wz4g