Dubbed Information
I don't have that much information about the dubbed version. Take a look at Shaman King Uncensored for way more detailed information on each episode.
Dubbed Names
Not all names were changed on the dubbed version. For instance, Yoh, Anna and Amidamaru's names were all kept the same. However, some were changed:
Ball (Bull) Boy --> B Boy
Chocolove --> Choco
Gei Yin --> Ginny
Hao --> Zeke
Harusame --> The Sword of Light
Hole of Yomi --> Tunnel of Tartarus
Horo Horo --> Trey Racer
Jun --> June
Koropokokuru --> Minutians
Kororo --> Corey
Lee Pyron --> Lee Pai Long
Manta Oyamada --> Mortimer Manta
Morphin --> Chloe
Muscle Punch --> Magnet
Pirika --> Pilika
Ren --> Len
Ryu --> Rio
Shamon --> Shoulin
Tameo --> Tamera (Tammy)
Zen Hijiri --> Zen Hoshi
ZenRyo --> The Flying Zen Brothers
