250rmike
04-19-2004, 05:49 PM
a 400ex with mx mods or a 350x motor bored .020 over in a 250r chassis which is set up for woods but the rear end can be widened and i have some wider a-arms? what im reall asking is which would be faster the 350x motor that .020, ported polished with pipe or a 400ex with similar motor work?