That tire is 25" diameter. I run 24.5" diameter tires which is only 1/4" more on the radius.
I'm 24" to the top of the front fender lip to the ground. Really stupid low.
But I have 1.14" torsion bars that are almost 3 times as stiff and Bilstein RCD shocks.
You are bottoming out. And check your welds at the lower control arm stud hole on the K-member and check for cracking around the K-member bolt on the frame.
I think you need bigger T-bars or go with dropped spindles if you like the ride of the .89" torsion bars.