15 NOS Magnum Roller Lifters 4494467 Lifter and push rod assembly
Ok, may not be Magnum.
I called a parts guy he said 85-87 5.2 Magnum is what he said.
Also 88-89 3.9 V6.
Maybe they were not called a Magnum yet but used roller lifters and FI.
Here is the lifter top of one of the packages I opened.