Worried 
2007 Toyota Tundra CrewMax Cab SR5 4dr CrewMax SB (5.7L 8cyl 6A)
Wonder if engine will hold up.
 The 2007 Toyota Tundra is a nice truck, but I have a few complaints: the engine sounds like a diesel until it warms up, the ride is jarring, and it is hard to see when backing up.  Toyota seems to use a lot of cheap plastic material; some have started to discolor already.  When I ask the dealership for help on issues that seem to be abnormal it all ends up being normal; like the clattering engine, the vibration in the steering wheel and cupping tires, and transmission down shifting.