Finding used motors?

[Dinger]

Just curious if anyone on here has a place the recommend for locating used motors.. Im calling around to different wrecking yards and stuff but wondeirng if anybody has had better luck with one over the other..

Currently looking for 97 mercury Grand marguis motor. 4.6L

Thanks

[kingjason]

http://www.car-part.com/

[junk racing]

bolt on motors in dallas. Used motors already pulled I believe they come with a warranty