Replacing radiator fans on a 328

My right radiator fan (I believe the motor) appears to have given up the ghost. I did a search on the forum but didn't come up with any results on any suggestions for replacement fan units on the 328. I plan to do both given how old the car is and would appreciate any insights on aftermarket replacements, as well as the ease of the work itself. Apologies if this has been asked and answered elsewhere, but I saw threads about the 308, but none particular to this for a 328.