Ok I cant find the article and Web motor sports page is not what it use to be But I don't think it addressed Meth anyway. Sorry. I know once I let someone talk me into not building an engine the way I wanted and regretted it. I would just make sure 19% isn't going to over spin anything. But hay look at the up side. If it goes south on you just remove the whole thing and send it to Jan and tell him make the baddest R53 motor he can. Its just money.