Sorry if I am asking a redundant question but im coming off a modded YZ250 and am new to the 450 world. I just purchased a new YZ450F and would like to remove the cones from the stock silencer and replace it with a core from one of the several old 4stroke silencers I have. Im sure this has been done many times?? My biggest question about this is not performing the mod, but how loud it would actually be? Thank you for any input.