I'm on my second season with those rods, still going strong allthough i do plan on replacing them every two years as their in a 840 hp 406 with sb2.2's. But i've never been afraid of taking calculated risks.
I have these rods in sbc 383 turning 7500 rpm with 630 hp and same here in 2 season with them but i was told they r good for about 750-800 hp...less moving mass then a i beam so in my case the way to go