I just recently purchased a set of Euro Headlights and Clear Corners (not euro design) on
www.ebay.com for my Xterra and in my opinion, it really updated the look of the front end. But you be the judge. These fit both the Frontier and Xterra.
Installation was only the removal of the front grille, and three 10mm screws per headlight. The clear corners only required popping up the hood and removing one (1) screw per side and disconnecting the harness plug. A very simple, easy level 1 installation but does wonders for looks and for a functional light pattern upgrade due to the CAD-designed light reflector which puts light where you really need it on the ground instead of diffusing it.
Now, there are several vendors on ebay selling these headlights. DO NOT PURCHASE FROM A SELLER NAMED: team_XRT.
As for the clear corners, they are harder to find so you'll have to get whatever is available from whoever.
Instead, I went with a seller by the ebay name: idol168
MCW Distribution, Inc.
12915 Telegraph Rd. #G
Santa Fe Springs, CA 90670
(605 and 5 Fwy., heading east on Telegraph Rd. in Orange County)
Headlights: $75 if picked-up, $100 with shipping/Handling in the lower 48 states.
Clear corners: $20 plus $10 for shipping (no pickup available). Also, harder to find.

New EURO Headlight/clear corner "install" for a 2000 Xterra/Frontier
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New EURO Headlight/clear corner "install" for a 2000 Xterra/Frontier
Irwins-pics 122.jpg (155.46 KB. 640x480 - viewed 306 times.)

New EURO Headlight/clear corner "install" for a 2000 Xterra/Frontier
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