has anybody built a yz 250 blaster using the stock yz pipe

hi there i used a cr 125 bills race pipe as it fitted like a glove .the only thing i had to do was cut the front pipe of the yz at the top where it joins the engine and weld that to the cr pipe and job done .i no it anit the best option, but let me tell u ,u loos very littel power mines goes really well i fell off yesterday and have a hole in my hand .still much fastness ill upload a vid tomorro u can see 4 ur self