I live in Denver,Co and I travel up Lookout Mountain E/I-70 right up into the Rockies.I'm very surprised at the performance the V-6 has.I pulled that 6% grade(about 5 miles up) with no bogging or stumbling.I felt it pulled that grade really nice.I know it not GT performance but I felt really good about pulling that mountain.I did run it up in forth gear but I had to in my GT as well.I think both drivetrains are excellent and having two excellent engines make these Mustangs a great value no matter which road you choose.

Poco