[Gearhead999]

I ran the Crane Energizer rockers on last motor for over 10K miles. Never a problem.
I prefer the Crane "Gold" rockers. They are on new motor.

If I remember correctly the Energizer rockers came from Ford on the first Cobra's.

True the energizer's are a cast rocker. But, for street applications they seem fine. If you have lots of spring pressure, rpm, etc. Get the Gold rockers.