"Hilux Surf" is the full name, often shortened to simply "Surf". Locally they are affecionately called "Smurfs".
The 2.4 does crack heads, although there is a better head from another model avialable. (Not sure which one myself.) The 3.0 head also cracks occasionally but it's usually due to cooling system not being up to the task.
The Japanese radiators in Surfs are not up to Aussie 40+ degree days, especially when towing or when a bullbar that blocks airflow is fitted. The solution here is to fit a local-spec Hilux Turbo Diesel radiator. That solves any further issues on the 3.0 at least.
The Surf was never sold in Aus new either, we got the 4-Runner in 4cyl, V6 or non-turbo diesel form. But we did get Prados sold as such new here.
I can recall driving all the way across Melbourne to look at a 1KZ-TE Prado and being annoyed to find it was a Jap Import with no dual tanks and various other oddities.
Both Surfs and Prados have a huge range of aftermarket bits here. A Surf can be converted to dual tanks relatively easily using a Patrol tank provided the spare wheel is mounted on the rear, not underneath.
If I was doing a journey by myself I'd prefer the Surf for it's more compact size and slightly better economy. I also think they look better and they are far cheaper here. But if with a couple of extra people or I was towing I'd take the Prado/Colorado.
Melbourne - Adelaide - Uluru - Great Central Road - Fremantle - Nullarbor - Adelaide - Melbourne in a $1000 Mini - May 2013. We did it!