Here are two quick shots of my cams...is this the stock exhaust cam part number - #4116? Also does the wear look ok on them? Is there anyway to check to see if the sprints/retainers are stock or aftermarket (see 3rd pic, I know, hard to see anything that might tell you but worth a shot)?

Thanks!

 

stock cams are hollow, and light. they have holes that u can see showing they are hollow. most aftermarket cams are solid and heavier. your valvetrain looks stock.

the wear is normal.