Turbocharging an older car

I wouldn't recommend turbocharging a 10-year-old engine without rebuilding it first. It would need to have new pistons anyway, and I would err on the side of caution and go through it from top to bottom to make sure it will be up the job. The best way for him, in my opinion, would be to buy a diesel. They're all turbocharged these days and have the torque to tow the 2.6 tonnes he needs to tow. Most will tow up to three tonnes, but if he were towing that weight every day I would consider an aftermarket heavy-duty clutch. We have heard reports of clutch problems with the Toyota HiLux when towing. The commonly held view is that they're geared for highway use, which puts the clutch under pressure when it has to tow a substantial load.