None of them. You can't really approximate a humbucker with a single coil, they are just too different. The closest you can get would be to find a high output single coil with an alnico 2 magnet.
In that case, would the 'lil 59 sound warm in an alder bodied strat with a maple fingerboard? I need something warm and humbucking like for the really sweet solo tunes and it's been quite a while and I haven't found the right pickup yet...
My favorite strong bridge single coil from SD would be the Twangbanger. My favorite mini-humbucker would be the JB JR. I think either of those would be a good choice, but they won't sound like a Custom Custom. Lew
I wonder if one of those Jb Jr's with an A2 magnet would be a little closer to the CC? MJ now offers the lil' series with A5's, so you might want to ask her if she can do the same with A2's...