Bare EQ Magnum heads vs. machining stock Magnums?

The guides should be checked and probably only bushed if needed, but yea the valves will need done for sure.
Nice that you already have the springs and retainers.

The mag I have now had around 90k on it and looked really good inside, but man o man were the exhaust valves trashed.
I could turn them 180 degrees and see light around the seats they were so bad.
Besides the crack on all four corner cylinders that was the decision maker for getting the EQ's.

I've heard of guys going through 5, 6, 7 junkyard Magnum heads with them all cracked; I didn't even bother with the heads that were on my 5.9 Mag short block, pulled them off the engine at the junkyard and immediately tossed them back in the truck's bed lol.