Old School vs Magnum on 86 Dodge W100

Great input from you guys...
@jas0162 - Good point
@318willrun - You are correct; that's what he did. Until we pulled to pan off, we thought it might have been a good deal. But so many issues (200k miles, pitted Cam, scored crank, etc) it doesn't make sense to drop it in without rebuilding.
@Trailbeast - Good point.
@nm9stheham - I will have to change the Cam as the one in the Magnum is pitted on several lobes. I guess I'll go back with a stock cam unless someone gives me better ideas. FYI, I don't know what "FI" means.
@Garrett - Nice write-up, thanks for the input. You know much more than I do at this stage regarding the cam :) I'll send you a PM.

I haven't made a decision yet but all the input is helping!!