Double check with your dealer, but I think they're 51410-60020. I ordered them through my local dealer when I had the exact same scenario (new asfir with no old skid). It was worth the $18 or so bucks to me to have the tapered easy start tips and the captured washers. I just find that a lot easier when I'm laying on my back doing a reverse pushup trying to get the skid plate bolts started.
Also, I'm not sure what bumper you have, but I had to do some trimming to fit that skid around my ARB. I ended up cutting out a cardboard template and laying that on the skid as a cutting guide. Luckily that aluminium cuts pretty easily and it's easy to round the edges afterwards.