Never heard or read of any concerns about using the MP chrome box on the street, but have read elsewhere regarding the “race black/gold box” it was an excessive heat issue, but have read here (takes a little time searching posts about use) and elsewhere that many have used them on the street with no issues. Obviously not a viable option for a stop & go daily driver but for a street/strip setup properly mounted with some additional cooling (add a heat sink) is all I’d be concerned about with any box, regardless of the color or suggested use.