Here's a question to answer your question- is the baja king basically the same as the thunderking? If so, then a quick search will yield a few threads with BL conversions and other nice updates to the vehcile using parts of other more modern vehicles.
http://www.rc-monster.com/forum/show...t=thunder+king
http://www.rc-monster.com/forum/show...t=thunder+king
http://www.rc-monster.com/forum/show...t=thunder+king
http://www.rc-monster.com/forum/show...t=thunder+king