PUt it this way, if you already have the bumper etc, I'd go for it. There have been a couple of people who put on an ARB bumper on a suburban from a series 100 LC. It should not be that difficult. I am doing the suburban LC 100 modded ARB on my rig next season. I have to figure out how to swap out the stock bumper or something for the plow for winter. and use the ARB spring, summer and fall.
But it should not be that difficult seeing as they both use the same chasis.