Drag: Have motor and trans, but which car?

I'm on a pretty strict budget, but what I could find tonight was...

http://bloomington.craigslist.org/cto/1242645933.html
1974 Dodge Dart Swinger

http://bloomington.craigslist.org/cto/1242837564.html
1975 Plymouth Duster

Which would be lighter or easier to race with...this isn't for sure, just seeing whats out there?