When I picked up my 07 450 I ordered a E2 pipe for it. I was told the 06 and 07's were the same so they ordered the 06 pipe. Well it did'nt fit and after hours of F'n with the damn thing I looked on White Bros. website , low and behold I find a differant part number for the 07 than the 06. So I order the 07 pipe, picked it last night and tried to install it. Well this pipe is supose to slip over the stock head and I cant seem to even get to start to slip over the stock head pipe:foul: Any one else deal with the E2 and have these problems?