Thanks for that info! Looks like that bracket is the way to go.I have the C59-817V with IMS shocks in the rear and the truck sits about 1.6 inches higher than stock. I have not added any significant weight to the vehicle. (How are you measuring 1.75 inches higher on yours with a lower rated spring??)
Anyways, I just installed the Dr KDSS Shorty BOTCK on the truck using the stock panhard bar. Corrected the angle from about 3.5 degrees to 0.8 degrees. Its not perfectly level now, but its much better. (i dont think it comes level from the factory anyways, to account for the potential load in the trunk. I didnt measure the angle of the bar pre lift so i dont know for sure. if anyone has that measurement, it would be a great reference). After the BOTCK install, the ride quality seems to be a better when taking bumps in the rear.
Before:
View attachment 63460
After:
View attachment 63461
And the distance from the top of the panhard bar to the frame cross member after BOTCK install is a little under 5 inches, while the distance from rear axle to bump stop is 4 inches. This means that the raised panhard bar and bracket should not contact the frame even when the suspension bottom outs.
So IMO, you dont need a new panhard bar. You just need Dr KDSS Shorty BOTCK and you should be good to go.
View attachment 63462
And regarding upper control arms, if you can get it aligned, then you dont need it. I did not need it for mine, which is lifted the same in the front and rear (~1.6 inches).
I measured from hub center to bottom of fender lip prior to lift. Then again after.







