any one use Hooper's 800 kit on a m7 xfire 7? feedback I have had a bmp800 sold that one with a scared jug surprise surprise on a dif sled.I know Hooper makes great race engines so I am assuming he makes good [trail motors]I am not as concerned with peek rpm power I like alto of mid range power.most riding in the trees in da UP.the site says 155 with a single pipe