I just did a quick search on the 2002 and 2003 4Runner and the specs are not very impressive compared to the $ value. They go for about 14,000 at least…compared to a low 6-8,000 for the GMC or Chevy.
2002 specs for the Toyota 4Runner
Horsepower: 183 hp
Torque: 217 ft-lbs.
Maximum Towing Capacity: 5000 lbs.
2003 specs for the Toyota 4Runner
Horsepower: 245 hp
Torque: 282 ft-lbs.
Maximum Towing Capacity: 5000 lbs.
both these years they still only pull 5,000lbs max.
I think the GMC or Chevy would be a better bet
PS: both GMC and Chevy put out 270hp and 275tq and both pull max 6,200lbs approx.