Radiator on a 2006 Mercury Mountaineer. Has anyone replaced one and how difficult was it to do? ?

Our 2006 Mercury Mountaineer needs a new radiator according to the dealership that changed our oil yesterday. The tank seals have apparantly hardened and leak. Nobody that I have talked to thinks that replacing the seals is the solution because the problem will just occur again and they talked like this is a common occurance. If so shouldn't Ford step up to the plate and help you out - warranty or not? Anyway the dealer quoted a price of $640 for installation of a new radiator. I think it sounds outrageous. I know they are no doubt quoting OEM parts and aftermarket parts may change that quote quite a bit but even so it seems really high. I think they said it would be $200 to $250 for labor alone. How difficult are they to change out? I am no mechanic by any means but am not a dummy either. Can a person do this without special tools? I guess if I could get this done for around $300 I would not bother messing with it so if any mechanics out there seeing this price as a possibility please also let me know. Thanks.Radiator on a 2006 Mercury Mountaineer. Has anyone replaced one and how difficult was it to do? ?To add to the above poster's comments, on these particular vehicles the radiator is an absolute pain to replace, even to EXPERIENCED Ford dealer techs, let alone someone who doesn't know what they're doing. Doing this job on this particular vehicle also requires use of the Ford specific transmission fluid cooler line coupler tool to disconnect the lines from the radiator, failing which you will destroy your transmission fluid cooler lines, adding further expense to the repair. $200 to $250 sounds VERY reasonable for labour, considering the difficulty level of this job. And yes, this is becoming a common occurence on these 2006 and up Explorer/Mountaineer vehicles. Hope this helps.Radiator on a 2006 Mercury Mountaineer. Has anyone replaced one and how difficult was it to do? ?Not exactly easy to do... i think you would be better off letting a shop do it. Not required but a hoist makes easier.Radiator on a 2006 Mercury Mountaineer. Has anyone replaced one and how difficult was it to do? ?If I remember right, you remove the radiator with the a/c condensor in an assembly