How to install models into ESF ?
First , download the model you want.
Then go to the ESF\DATA\PLAYERS folder and find the Model replacement , in this case the Goku folder.
You can now see two maps , one called SSJGoku and one called Goku. SSJGoku is the model that's being used for Super-Saiyan ( D'oh ) :] Now , if you want that Super-Saiyan to become Super-Saiyan 3 , you have to copy that SSJ3 file into the Super-Saiyan folder. Now , IF it has another name , like .. ermm , SSJGoku3.mdl , you have to rename it into SSJGoku.mdl.
Now , start up the game , achieve the required power-level and you're done!
Happy screaming!
*I need rest , my fingers hurt*