My friend had an Aprilia SXV 550 that he is having coverted to a road racer. There really is not a class for a 550cc v-twin, but he thinks it will be a blast to ride. i am wondering if the engine is going to last very long. It is plenty fast, but has a "plastic" feel to it and I suspect that it will cover very few race miles before grenading. Is there anyone with experience racing one of these out there, either flat track, road race, or super motard? The extensive list of extra parts are offered on eBay by seller www.BritaliaImports.com .