One thing I will warn you of is to take into account that 90% of the adjustment on their bars is out. I made the mistake of not paying enough attention to that and ended up with a tie rod that was just a tad too long. So be conservative with your measurements, or at least that is how they used to be, its been a while since I used them.
Although I am getting ready to order a new track bar for my cummins soon and am thinking about using them