Going off what a mate did (he bought an Exploder off e-bay) I wouldn't either...

See if you can look for an American made F-Series that has been converted. Parts are harder to get here (but easier to get overall if you are willing to pay shipping from the US, and most converters used Falcon dash's and steering boxes and columns) but the US made vehicles used much better quality steel against rust thanks to thier salted roads.