I used the 1011-2's the last go around. For a mild build I think they work very well. My father-n-law has used them on a 400hp,11.5:1 compression strip motor for several years and never had a problem with them. If you decide to go with these, they can be bought cheaper as Ford Racing Gaskets. I don't have the part# on hand, but I bought them from Late Model Restoration under the FRPP name and they are the same thing as Fel-Pro 1011-2...they have it stamped right on the edge. They were significantly cheaper this way.