hmm that will look a bit daft tbh although the 24" wheel is bigger the tyre sidewall has to shrink significantly to get the same overall diameter so the new wheels will look very lost in there, if your looking for the bigger arch fillers then you need bigger tyres not wheels or a combination of both however you will lose significant performance and MPG unless you regear the final drives 24" diameter tyres tend to have very low profiles over here, there is another thing to consider on our uk roads a couple of potholes will quickly destroy your wheels with that amount of weight on them, my wifes car has 35 profile tyres and so far we have replaced 2 wheels for the same reason and it only weighs a half if that of the Nav.
you can see the effect in the video below and those pickups have big lifts 38 inch tyres in the uk would be very illegal without massive arch extensions which are available but the cost to do that dunno i suspect it would be cheaper to buy a yank tank and do the same, one final thought a 22" micky thompson AT 37/13/22 runs at 65psi ouch