I'm getting the parts together to do a top swap with cam and header upgrades. I have a lifter that takes a short time to pump up and would like to replace them all. I've heard bad things about the Comp Cams lifters so I don't think I'll go that way. I've found some LS motor lifters that say they fit 4.8,5.3,5.7 and 6.0L and the ad said LS7 also. Does anyone know if these will work in a 3800? Thanks for the help.