yes, Westin Bull bar will work for the Mountaineer.
I have a 2002 mountaineer in all black, got a westin black bull bar for it. You have to get one for the Explorer as Westin does mot have the Mountaineer as listed as having a bull bar for it, but Mountaineers obviously have the same frame as the Explorers so they do work.
I have to cut 2 holes in the lower bumper right in front of the frame to mount to bar into place, that was the biggest pain in the butt cause it takes a lot of patients cause if u mess up the cuts, you gotta buy a hole new bumper to replace it, so take ur time cutting the holes.
I've had it now on for over a year and still get compliments on it as u don't see any mountaineers with a bull bar on, it stands out very nice from the rest! I also got KC drivings lights that go onto it, very bright.
I can't post pics of it since I don't wanna pay 20 bucks to post pics on here. if u want pics, let me know, I'll e-mail them to u