That rotor got rusted, the caliper is not retracting as nicely as it should. The caliper needs to be pulled, guide pins lubed, dust boots pulled to make sure rust isn't pushing against a piston(s), and then the pistons popped out and the bores check for crud and rust. After that, get the rotors turned, do the break in on the pads pretty aggressively and it should be good to go. If not, get in touch and we'll help you out.
Well, there is good news and bad news. The good news is all of that is fixable, the bad news is you will have to practically start over from scratch.
Not enough backspacing to start. It is never going to steer and handle well with that much offset.
Dump that crap inverted T steering and go back to the factory style.
Put the trackbar back in the stock location on the axle. Get a nice adjustable on it.
Dump that pitman arm, go back to stock with the TRE under it.
That will all show you if other than those parts are in need of fixing.
