I have set #11 of the first 25 pair. Just wondering where the other 24 pair ended up, as well as the next batch of 25. Mine work great, I was in Seattle rush hour grid lock traffic this summer and no issues, ran 160 degrees.
I will put it on a dyno in the spring. It is a brand new motor that I have 1,800 miles on. Isky did a custom grind on the cam, Edelbrock manifold with a 390 cam Holley, Fenton headers, Ross pistons. It pulls well on big hills, lugs down like a good flathead should.