This is a set of 1961 Hipo 390/375 Hp Heads, I have owned these since 1973 and the have been sitting on a shelf for all these years, I am selling all my Fe parts a collection I have had for almost 50 years. This set I degreased and blasted, then we magnufluxed them ( no cracks) and I also pressure tested them. These are the small chamber heads ford did for the 1961 racing season. All the guides feel good!