Getting back to the topic of wheel loaders, the GHQ Cat IT 18F is probably the best one that has ever been available in 1:160 scale.
Unfortunately, GHQ has not re-released it with the bucket attachment. (Cat calls the prototype an Integrated Tool Carrier rather than a wheel loader.) However, as mentioned at the beginning of this topic, the IT 18F has been available for a number of years (nearly 20) with grapple forks for log loading. It is really too bad GHQ has not released the bucket as an accessory so people could purchase the model with the grapple forks, and then decide whether or not to build it as a log loader or a wheel loader.
Also, the IT 18F is not a very large machine, about the same size as a "medium" horsepower farm tractor. I have included this comparison photo of the GHQ model with a 1:150 scale Fujimoto Hitachi loader, and a a 1:150 scale Maruka Komatsu loader. Both of the 1:150 scale models represent large loaders, so they are significantly larger than the GHQ Cat. However, if you need a really large loader with clear windows, the 1:150 scale loaders would work in a pinch. (My yellow Maruka Komatsu was no where to be found this morning, so the "military" version was used for the size comparison.)
I am really hopeful that a manufacturer of N scale models will realize that there is a demand for 1:160 scale construction equipment, especially if it is marketed with accessories so more than one option is available!
Edited for spelling and clarity.