Cross-over steering kits like that cause geometry issues which only result in severe bump steer on the street. If you want a good solid reliable system that is HIGHLY respected for its ability to withstand severe trail abuse, it's very hard to beat the Currie HD steering system. It's not cheap at nearly $400 but dealers like Savvy Offroad
discount that price pretty substantially.
Its biggest benefit after its beefiness is that it doesn't screw up the steering geometry like a cross-over steering kit does which, again, just causes bump steer.