thats why you need a converter built to that combo.. moden converters are a ,ot different the the ones a decade ago.. with OD it will have to be tighter then a non OD unit but it can still be a decent stall. they are using smaller dia. cases (9.5") to get a higher stall speed but using a positive pitch on the fins to make it lock up better for the street. it will still be a compromise though..
