MASCO 32192 is the same as Delta RP5834
I tried calling Masco, and they gave me Delta's Customer NO service, who told me that if it did not say 'Delta' on the faucet, it was not theirs...
Well, I went to Lowe's and bought the Delta RP5834, and guess what? It IS the same, and even has the MASCO 32192 sticker under the spout.
All I had to do was take the brass thread out of the new one (and the o ring), and screw it over some Teflon tape onto the old fitting.
Thanks to everyone who posted here!