My opinion of ct is from his older work. I have a "sponsored" cylinder that is a 310cc non pv on a trx250r. Hands down the most snappy, powerful, reliable engine i have rode. It easily beats built 450's, 700 rappys with power to spare. Leaves a lot of people scratching their heads. Nothin like doing a 3rd gear launch and shifting all the way to 6th @ comp hill / banshee hill @ dumont. Motor is no joke. I don't even hide it, people ask what size is it, i smile and say 310cc's.