Even if you could get the radiator from a Focus (and you haven’t told me what year Focus) a radiator designed to cool a small four-cylinder engine probably wouldn’t have the capacity to cool a larger, V6 engine as found in a 2002 Ford Cougar. Perhaps it would work at moderate speeds in cool weather, but a freeway drive in high ambient temperatures would very possibly see it fail to cope. You’d also need to ensure that the radiator suited the transmission fitted (a radiator for a manual car can be different to one for an automatic).

From what I can see, the radiator to suit a 2002 Cougar is, in fact, interchangeable (on some level) with that of a six-cylinder Ford Falcon from 2002 to 2008. Perhaps that would be a better idea, but I’d still be running a tape measure over both cars and taking careful note of where the mounting points are. Or, simply buy the radiator that’s designed to fit the Cougar.

Not really sure what the axles have to do with a tyre that has jumped ship, but perhaps you mean the whole front wheel and tyre assembly came adrift. If so, you’re lucky not to have crashed or hurt yourself or somebody else. If this was caused by a broken axle (also called a driveshaft) then perhaps that’s the basis of your question.

However, the answer is probably no; the driveshafts from a 2002 and 2006 Focus are unlikely to be interchangeable. Even though the engines and gearboxes form each of these two Focus models were similar, the later car was 141mm wider, which almost certainly means it had longer driveshafts than the earlier car. But if a replacement driveshaft is what you need to get back on the road, I wouldn’t have thought finding one from a 2006 Focus (the same as yours) would be such a problem. Parts recyclers are likely to have plenty of these cars in stock, and specialist driveshaft shops can be a great source of spare parts also.

The Ford Focus wasn’t released into Australia until late 2002, so it’s very unlikely you have a 2001 model unless it’s been privately imported. At which point, all bets are off in this regard as different markets had different models which may or may not be swappable.

But if the two cars are the same model of Focus and aren’t either side of an upgrade, facelift or model change AND provided they used the same engine from the factory (1.8 litre or 2.0 litre) then you should be able to repower one with the other’s engine. The problems would start if one was a 1.8 and the other a 2.0 when you might find that wiring looms, computer software, sensors and even engine mounts might differ from each other, making the swap much harder than it should be. Don’t forget to inform your insurance company and your local registration authorities of the change of engine number.