Clarification - if you are referring to the factory sheet metal skids then they can be used on either vehicle. To be honest, they are so weak that I just figured you had found some aftermarket skids for sale. The stock t case skid mounts with 3 bolts along the leading edge with no other support and will bend on the 1st hit. If you can find 2 radiator and engine skids, do it and double them up. The stock skid set also does not include a transmission skid which leaves a 'hole' in between the engine and weak tcase skid. With the aftermarket skid set, you end up with much more complete protection that allows the vehicle to slide over rocks rather than getting hung up.
I have Hefty skids and they fit except the transfer case and 1 bracket for the gas tank skid which is different. Fortunately, I had been shipped that bracket when I originally bought my skids for the Frontier... so I was able to bolt it right up. Forgot about that difference....
I hope that helps.