Running a cam/lifter combo that didn't start out life as a new, properly run/in assembly is risky at best and catastrophic at worst. Doing it with used parts almost guarantees bad results. You can probably expect very short camshaft life. Use a magnetic base dial indicator to check the cam lobe lift on all the lobes before doing anything else. As long as you use the right manifold adapter rings, things should bolt up OK.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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