Magnum Roller Lifters

I bought Johnson High Lift slow leak down lifters for my Magnum with a .530 lift cam. Still have to finish putting the motor together so I'll see how it goes but they seem to be the good ones now days.
I'm guessing you bought Comp lifters.
I don't think Comp makes hyd roller lifters without link bars for small block mopars, they're all retro-fit link bar type.