All I can say is the Blast V12 has been absolutely amazing for us......things that stand out so far is how easy it tunes with the short LSN and how strong it idles.....The power is great and very well balanced with a absolutely shrieking exhaust note........The top end charge of this engine is nothing short of amazing...... On the low end the power is quite smooth, but at the same time very potent....I had it in my truggy for a while and it was able to clear our triple with about half throttle........ Another standout is the fuel mileage... We are seeing mileage beyond anything else we have seen since the Werks B5.......all in all a fantastic engine.....