cam identification help?

:cwm10: Hi, I bought a supposed used comp cam at a swap meet. on the end it has written with an engraving pen XE-268-H with 2 holes on the end. It was in a comp box the guy said it had less than 4000 miles on it. When I got home and started looking at it and comparing it to a 360 cam out of a 78 roadrunner, the 360 cam has about .032 more lift and wider cam journals. Do any of you guys think i got ripped and with the skinny journals it might be a 318 cam? Is it unusual to have the not as wide journals on a comp cam and do you think the the 360 just had an after market cam with a bigger lift than the comp 268? If I don;t get an answer I guess I will take the cam to my local speed shop for authenticity and i'm out 60.00. thanks for any resposes, your mopar brother walt