Have you considered looking into geting it from a dealer? Seeing if thats a dealer part. (I have a frontier 2004) I got a Class 3 hitch from Reese for 98 BUX at wallymart. Any "After Market" hitches I looked at all the manuels or outer box always linked drilling with any of the imported vehicle.
from
www.everythingnissan.com a class 3 hitch was
999T5-XK000 - Receiver Hitch Class III $268.75 2001 Pathfinder
I would assume it is direct bolt on bing from there. AS they have genuine nissan parts.
Thats were I plan on geting my fogs for my truck since the D**n dealer wont sell them to me.
UHaul is a nother option. There hitches are on the cheaper in quality wise vs the Reese when I looked at them. But I also have a friend that has a UHaul thats 8years old little rust and still going. No problems... so.
Ill keep my eyes open if I see anything
Phyro