Measure the lobe lift of the cam to ID it. Or stick it back in the motor and degree it
to determine the specs. Any ID/Part# grind # info numbers will be stamped on he end of the camshaft. CWC ='s Camshaft machine company. They make the camshaft cores. They don't grind the cam profile.
New cam choice:
What car? what gear ratio? what do you want the motor to do different, than before? Exhaust system?
Whats done to the 305 heads?
I would swap that intake for a Performer RPM dual plain hi-rise manifold.
Big difference in usable torque.