I'm trying to decide on which cam to buy for a 440-6 restoration, and I'm struggling a little. I've never had a cam failure with Mopar Performance cams and have used quite a few of them, but I'm thinking about going with a Voodoo or Xtreme energy cam this time. The thing that's in the back of my mind is that it seems like a lot of people have said they've had failures with Comp Cams camshafts. Does anyone have an opinion on whether the Lunati cams hold up better these days than the Comp cams do? Does anyone know if there's a difference between these Mopar Performance six pack cams 4529270 & 4529270AB? Thanks