need help ASAP, CAM identification PLEASE
 

I'm refurbishing a 1.8L going into a buddy's car tomorrow. It has hydro lifters but how do I ID the cam? I see the cam has a "boss" or circle cast half way around the cam, vs. a boss all the way around. I don't have access to ANY books. I can't remember if half a cast means hydro or solid.


Question: should I lash it like a hydro? or wait and put in solid lifter (I have a new set at my house). I know the Tom Wilson book talks about but I digress...