ORIGINAL: Bundubasher
Again, if it is only raw speed you're looking for, you need to look at a Weston Magnum, or probably a scratch build plane from plans - something like a Kangaroo delta, little smaller (and lighter) than a Magnum, same engine, 6 mm thick wing - thus less frontal area than a Magnum and higher power to weight ratio. I've build one, it hauls tailpipe. To my knowledge there's no kits available, just plans. From plans in the RCM Modeller of a few years ago. (Not the Graupner Kangaroo which is something totally different.
It is not the thing to fly at a club where other people are flying - you need clean open airspace. Some clubs may not allow you to fly it for high speed/noise/safety reasons. It's a personal choice - what you are comforatble with.