I love the way it pulls my 26 ft trailer about 8k.. Cruise control and forget it, is nice.. Bought a 10k 5th wheel and my truck can feel the difference.. Still made it up the big mountain passes but would drop down to 2nd gear/50 mph close to the top. Everyone would say diesel is next and that would definitely would work. would love to take it down the 1/4 mile to get a time.. All stock LQ4 with Magnason 112hh Supercharger and 4.88 gears is still putting a smile on my face driving around town.15's is doable and maybe 14's but i have to turn off the 100 mph speed limit first. On the freeway still getting above 12 mpg empty.