Hello Vibrac, And any other clever people, Have a look at E/bay, 321259206226, How the hell are they going to work ? The front has been chopped off, so no mag' and no oil filter, and the barrel stud holes, Only two are left untouched, I have never seen an over bored engine up close, But the photos I have seen still leave all four stud holes as was. Cheers, Bill.