We have a Blue ox Tiger Trak bar as well. Best I cam tell, there are 3 or 4 brands of track bars for gas coaches and that they're all one man's design, made at one plant in Pacific Nw, then painted, named, numbered and marketed by those various outlets. So shop for price; you'll be getting the same thing.
Hellwig sway bars are the same steel as Roadmaster, just much less expensive. I think it's because Roadmaster uses different distribution channels.
You can install sway bars with coach on the ground, on stands, or tires on blocks. Same for most of the track bar install, but the adjustment of the length of the bar (one end's threaded) should be done at ride height. No drilling, cutting or welding needed for any of it.