The rack stayed, the aerobars and 105 pedals went. I did not spend much time getting the oxidation off the crankset. The grease that ran down the fork from the headset is kind of baked in.

So the "after" pictures aren't going to be all that amazing.

I'm now thinking that it's a 24tpi english BB, and can replace the whole thing with one of the sealed jobs I have sitting around.