Lunati 703 cam

So you have not had any of the lifter fail on you?

Nope. I've used Lunati, Melling, TRW, Crane and MP and never had issues. The only time I ever had a lifter problem was on a Chevy 350 and it wasn't the lifter's fault. A rocker stud backed out of the head and in turn caused a wire clip retainer to pop out of the lifter and ruin the cam.