Those are what my oldest son has on his 360. It is 11:1 with eddy heads. He decked his block so the pistons were .015 out of the hole. Although they are considered a cheap gasket He has had no problems. He put that motor together when he was 18, an he is 25 now. Motor is in his only car. driven daily.
been using that gasket for years..... for two reasons. It's what the auto parts stores give you over the counter, and they are cheap. I've NEVER had an issue with them.