Hi From Iowa Also Got A Question

They have not labeled cams by stages or fractions of a race in a looooong time.
Go to page 66 (68 of the .pdf) of the master catalog to see the start of the list of their roller 5.0 cams.
It’s too bad he does not have the data sheet that comes with the cam on lift, centerline and duration. It can be measured at the valve with a dial gauge, and it might be engraved on the end of the cam under the timing gear.
Or, you can get parts that are likely to work, set up one cylinder’s valve train and use modeling clay while carefully turning the engine over by hand to check valve clearance. There are more steps to each method, but I hope this gives you some options to look up snd see what you are up against.