I ordered a CIJ 57 reissue with the US pups and all that jazz.
I can agree with dood on the neck profile...wide and flat, which with small kid hands like me was a challenge at first but now i dont really think about it.
If im honest, i really couldnt tell you that the wood makes a hell of a difference to the bass' sound or not since this was my first real 'big' bass outside of copies and no name basses. Im sure some with more travelled ears and bigger wallets will attest to the differences between woods used though.
The pups were actually a lot better than i was expecting. Im not sure if they are actual US spec or just branded as such to suck in mugs with more money than sense, but i found them to be pretty warm sounding pups with plenty of clarity and thud (as you would expect from a P bass.
Personally i had mine switched to SD quarter pounders as i play with more than a lot of OD/dist and the SD's carry a lot more mids to my ears. Thats not to say i disliked the stock US pups, They just didnt have the volume i needed.
One thing i cannot stress though is to buy a badass bridge for it. It might be japanese but the bridge is still sh*t.