If your stove's "pan" is really rusty, to where it would be very hard to clean up, I have the whole stove that I removed from our CT13, in a box on a shelf in the shop. [fairly certain it's still there]
It was "fairly good", as I recall. Not perhaps restore-able to as-new condition, but solid and not deeply pitted. If you wanted the whole thing, you'd have burner & knob spares as well.
It would all do with some cleaning up, but it worked, apparently, for the previous owners.
Some pics below, from when I removed it in summer of '17........
"You'd care less what people think of you if you knew how seldom they did." E Roosevelt