Morning update:

I placed the 15000 series belt (narrow belt) on the 235 and the belt bottoms out on the. Water pump pulley and squealed like a pig. (I can demonstrate if needed. ๐Ÿ˜‚) we noticed that the belt fits perfectly in the alternator and crank pulleys, but moves front to back in the water pump pulley.

I put a new wider belt (17000 series) back on and no squealing. The belt fits into the water pump pulley and fits into the alternator pulley, but sits slightly higher in the crank pulley.

Iโ€™m going to my flaps to check out the belt GDAD stated earlier (maybe itโ€™s in between sizes?

The water pump is the correct 1954 235 water pump. So the question I have now is where do I go from here?