Hidden-Hitch Trailer Hitches

I want to mount a trailer hitch on my 2002 Xterra 4x4, and I've had great success with the Hidden-Hitch brand in the past.

I'm looking at JC Whitney, and my question is if the Frontier hitch -

https://www.jcwhitney.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&krypto=Apw3G8rpF4IUrI1Zn4wt55iYe7Q8vTVHNGw2AnZarrS riIpQ4xfKc1x7Fm8BmF6s

Will fit my Xterra. The Xterra hitch listed that they list there is the round tube hitch -

http://www.jcwhitney.com/webapp/wcs/stores/servlet/ProductDisplay?makeId=5000134&productId=1887&catalogId=10105&langId=-1&modelId=5079415&storeId=10101

which costs $60 more. I don't need $60 worth of beautiful lines designed to follow my SUV's curves...

I need a Class III hitch. Anyone got any preferences/comments/recommendations???

(Will the Frontier hitch just bolt on???)

I have a 2002 XE and use this round tube style Class III receiver by Draw-Tite. It works great and bolts on very easily. It cost $110, and although you said you are not interested in beautiful contour lines, it does look good on my X.
http://www.etrailer.com/fitguide.htm

Make sure you get the frame stiffeners from Skidrow www.skidplates.com

The frame is cut to an L-shape and is very weak at the back of the truck. I had a bend in it, and just knocked it back with a hammer.