its the hard to find one,its a late 50,iv had a look at a 30 hp manifold ,and the only diffrance is the ends witch bolt to the heads are little larger,i might be able to cut and weld my ends to the 30 hp manifold.the part numbers is the same 25hp and 30hp,but after the part number you have the vw logo and after that the number 19 on the 25hp and 17 on the 30hp.