just as the title says, tried to get a hold of Ralph to no avail, however i have purchased a new air filter and want to use it though it has the original plastic pieces inside. does anyone on the board or elsewhere use an m30 motorguard air filter to filter out there engine oil, trans fluid while hot i.e. continuously running while on the go. if there isnt enough concensus to use the unmodified units then i guess i'll just have to use the frantz units exclusively. thanks