Tom 
2009 Toyota Tacoma Access Cab 4dr Access Cab 6.1 ft. SB (2.7L 4cyl 5M)
2.7 4x4 Access Cab 5sp
 I live in the mountains and have found that the 2.7 liter has more than enough power for effortless driving. I also have a 2006 Toyota FJ cruiser, 4 liter V6 auto, so it is interesting to compare the two vehicles. I have not found the 2.7 liter to be under powered, also the ride is more comfortable because of the longer wheel base. One of the reasons for getting the Tacoma was because of the good fuel economy that I experienced with the FJ Cruiser which replaced a Jeep Liberty.