Thanks a bunch Steve... really helpful info... the pictures really help me get an idea of what I need. I have the newer bars with the curve in the tips, but I like the idea of the older style dual-cams being easier to adjust. I might go that way. Now let me know about the map...
I would not recommend a mix and match system. The older Dual Cam trailing arms only have a single ware surface were as the newer Straight Line arms can be reversed side to side as the ware thus doubling the life expectancy.
As for easy of adjusting the newer Straight Line arms are quite simple to adjust. With both nuts that hold the cam into the yoke adjust the WD system until yo have it as you want. Now while hitched up drive in a straight line for at least 75 ft. and stop. Tap the yoke and cam arms with a 2 pound hammer to be sure the cams are seated in the arms and then tighten the nut inside the yoke by hand. Once it is tight tighten the outer nut with a wrench. It is a good idea to lift up on the shaft of the drivers side bolt when tightening it to insure the cam is not at an angle to the arm. This is a problem with the sloppy machining of the key way slot in manufacturing.
In all cases after installing the newer arms mark them as to which side they go on again due to sloppy manufacturing they are not the same lengths and crossing them will cause sway rather than reduce it.
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I've owned both types in the past, having just gotten RID of the new type in favor of the PP. They both wear on the front and the rear of the cam. Also from my experience, the older type control sway better.
There's no question in my mind, I would get the older type. But, your mileage may vary.