Tom 
2007 Toyota Tundra Regular Cab 2dr Regular Cab 4WD SB (5.7L 8cyl 6A)
Muscle Truck
 I two a 10,000 lb trailer on a regular basis.  My previous truck was a Ford with a 460 V8.  The Tundra 5.7 bets it hands down in power and economy.  I have never owned a p/u in my 35 years of driving that is as powerful as this one.  It is amazing.   I regularly get 20 mpg driving 55 mpg empty highway miles.  Around town is 14 mpg and pulling a loaded trailer at 55 mpg gets me 14 mpg.  I use regular gas and everything factory.  