Ordered and received my new heater core, cost me like $36. I'll be installing the new heater core and upgraded blower motor on Saturday. I'm looking at a couple of options for replacing the speakers in the Jeep now, I have been driving it a couple of weeks now with no tunes. . . It sucks. lol
After work, I replaced the left front wheel U-Joint, thinking that was causing the knocking/banging noise from the front end, but it turned out the steering gearbox bolts were loose. Tightened them up after we re-installed the axle shaft, hub, brakes, and wheel, and took it for a spin. . . I can't believe I didn't notice the loose bolts, they weren't very loose, but it caused a noticeable looseness in the steering.
I also think I have an exhaust leak, my 4 cylinder YJ is almost as loud as my V8 Firebird with headers and Flowmaster exhaust. . . I'm going to take a look at it tomorrow. I know one of the exhaust manifold bolts is broken in the head, but I'm at a loss as to how to extract it without drilling or damaging the head. I'll probably take it to the same exhaust shop I've been using for years with the Firebird, and see what they find. It sounds like there is exhaust noise coming from under the front right floorpan.