cracked head

Hi all,

I have a 2007 Navara 2.5 td Manual. 2" Lift constant 400kg load, Extreme Outback Clutch & Flywheel, Dual Battey, 2200w inverter, Bridgestone 265x75r16 Dueler A/T's and other bits.

Currently it has a cracked head and is awaiting parts. The car has only done 58,000 klm's is this a common issue with these vehicles? I know the clutch is an issue as it's second one was dead by 37,000 klm's. Are these cars realy capable of towing 2 tonne reliably?

Any thoughts would be appreciated.

Thanks.