So my buddys trying to trade me some cams he got in a trade. We were told they were skunk2 pr03s, Well after searching and checking into it, it says the pro series cams will have hand etched marks such as p1p2p3+, well mine say:
exhaust - siex
intake - 58in

 

take a picture of the markings and post it, what you list doesn't make sense but they aren't pro series cams.

 

Cant get pics this very second. But the casting next to the oil journal says M2. The exhaust cam was SIDEX and intake was 58IN

 

They sound like skunk tuner series cams, either stage 2's or 3's but I think you made a mistake as to how you're interpreting the marks on the end of the cams. That's why I wanted pics, to see for myself.

 

They sound like they might be Tuner Stage 3 camshafts which are marked "S10" on the Exhaust and "S8" on the Intake.

However....we would need to see CLEAR pictures of the engravings before we could say what they are with any certainty.

 

Yeahh, im pretty sure those are tuner stage 3's.. But once again, post some pics so we can tell forsure..