alternator pully swap

Good eye Dell, yes this is a old moroso pully. It is half of a set that also includes the crank
pully. You would think they would have made a matching water pump pully also but not the case. I have found a ford pully to line up best so far.
The grooves are made deeper on this set so the belt can't spin off at high rpm.
Haven't fit a belt to see if it bottoms out in the groove yet.
You are correct also on the standard power steering puller not usable to remove this once pressed on. That does concern me also.
I may be able to ream the pully and use a set screw?
I will start by getting alt tested and pully removed.