Just to show I'm not down on all utterly insane station wagon modding projects, here is a 1966 Ford Fairlane Wagon in which the original Windsor 289 has been replaced by a 428 Cobra Jet. Also a 6-speed, a/c, and power disc brakes. 18,000 measly miles.
428 Cobra Jet Wagon, $26,900 asking [orlandoclassiccars.com via dt car shark dt]
Oh that is nice, but what about a 1964 Dodge 880 Custom wagon? http://www.hemmings.com/classifieds/dealer/dodge/880/1251522.html
I didn't even know they existed--possibly because only about 1600 were made. Very fun to drop the kids off at school in this!