MOWA rules require the H series tires across the rear, or a Hoosier ASCS Medium on the RR plus Hoosiers on the front. (our rules are here: http://www.midwestopenwheel.com/2013_Rule_Book.pdf ) As long as you can be at staging when required, as far as MOWA is concerned we have no problem with using the same car for both. I haven't asked the track their position on it. Also, this is an open header race. Raceceivers are required for MOWA.