g'day ,
i work in an underground mine and let me tell you if you buy one your an idiot ,
thay get flogged to the hilt ,
they get locked in low range and thrashed , red lining most of the time .
the acid eats the alloy quick as , we get about 5-8000 underground ks to a gearbox before the alloy housing has been coroded through ,
the dirt gets in the chassis rails and it corrodes from the inside out , they get hit against the wall 9and they have no give at all ), and bend the chassis and you wont notice till your trying to get a wheel alignment,
mind you we are using landcruisers , aparently the patrol dont last too long in mining , alot of them where snaping the chassis just behind the cabs
we do use those rust prevention systems , great when there new , but crap in a couple of months when the vehicles been nocked around and the tab falls off or the wire corodes
anyway thats my 2 cents,
good luck
cheers , chicken