Jack 
2001 Toyota Tundra Regular Cab 2dr Regular Cab SR5 V8 4WD LB (4.7L 8cyl 4A)
Excellent Truck
 The only mechanical problem I have had with this truck was the odemeter quit working at 300 miles. The Toyota warranty covered this repair and I haven't had any other problems with the truck in 61/2 years.  I towed a 17' boat for the first 3 years, and never had any problem pulling the 2000 pound boat and trailer through the Black Hills. Normally while towing I could do 62 miles per hour at 3000 RPMs.  The toyota Tundra's offroad capabilities depend on the tires you choose to put on the truck. I do a lot of off-road driving for work in the Black Hills through a lot of mud and snow. I changed out the factory tires for a set of BF Goodrich All-terrains and have never been stuck. 