I am "trying" to assemble the frame of my 66 SS396 project. I ordered the PST super front end kit. The previous owner of the car put a disc brake conversion kit on it. After pressing in the bushings & ball joints and installing all 4 control arms, I found out that the spindle is not compatable with these new parts. The taper on the ball joint studs (all 4 of them) are too fat for the spindle, I can't get the castle nuts on far enough to put in the cotter pins, also the angle of the taper is wrong, the studs are sloppy in the holes. Can anyone tell me what upper & lower ball joints, and outer tie rod ends to buy, to fit these spindles (part #'s 371676 RH & 371675 LH). I also noticed that the spindles change the suspension geometry quite a bit from the drum spindles (I have the original drum assemblies). If I measure the distance between where the upper & lower ball joints mount, I get 7-1/8 on the drums and 8-3/4 on the disc's. This raises the upper control arm. This I believe is why the previous owner bought offest upper shafts, put them in backwards to pull the arms in, and also has about 3/4" worth of shims to pull in the upper arms even more. Did the previous owner use newer model disc brake spindles? And is this bad? To change the suspension geometry like that? I drove the car all last summer and thought the steering was fine, the car sat good and everything. I really need an expert here. Please help! Can I just go to the local autoparts store and match up some ball joints, or should I go back to drum brakes???