Welp, it would be very hard without digging into it.
You could figure out some of your cam specs with a dial indicator but it would be a pain. the only way to determine if its bored is to pull the head or oil pan and measured. The only way I know of to check if the head is milled is to pull the head.
79 Cherokee Chief (passed CA smog check Sept 2020)
(Cherokee Build Thread)
11 Nissan Pathfinder Silver Edition 4x4
09 Mazdaspeed3 Grand Touring