It's probably obvious to all here, but just in case... Yes, the 46-48 waterpumps work just fine. But in a 32, if you are trying to do a 'bolt-in', then the 32 motor mount engine brackets are used, and that leaves the 46-48 water pump mounts 'hanging in the breeze'. If you want to support the front of the engine from the 46-48 water pump mounts, then you would need to fab a frame bracket. Addn'l note... 32 engine bracket needs to be 'clearenced' for the 46-48 belt.
Just opinion -- results may vary...