exhaust questions(again)

[JDiablo]

just wondering if a white brothers head pipe will fit into a yoshi "comp" slip on??please help me out here,cause imma probably do da headpipe and piston as my next project.

[cals400ex]

does WB make two silencers for the 300ex?? if they make two, one will be for the stock headers and the other will be for their headers. that yosh or any other slip on will fit the stock headers or any headers with the same diameter as the stock header. sorry, i can't tell you if it fits or not.