Replacement hose nipples are not that much, $5-10 in most cases.
If the old one has deep rust pits where the hose fits, I'd say why risk having the hose leak for such a small price.
I know you bought a reman pump, but new aren't that much more. Most times, a new pump will come with the fitting(s) needed to install it.
Locktite on the fan clutch? No need, if you get it tight. Particularly if you ever want to get it back off.......
1980 F-150 300 I6, C6 & 9" rearend. Cummins 5.9L/ NV4500 5 speed swap in the works
1974 F100 Ranger XLT 390, C6 3.25 axle. Dad bought it new.
1983 Mazda RX7 1.1L Rotary.
1984 CRX 35 MPG go kart
1995 Mazda B2300 (undercover Ford)