Following tools you need is DBO Resouce Tool to install texture.
STEP 1: Click folder the one is "blue highlighted"
forum.dboglobal.to/wsc/index.php?attachment/2903/
Step 2: Find your DBO folder then click "tex,pak" to open it up in DBO Resouce Tool.
forum.dboglobal.to/wsc/index.php?attachment/2904/
Step 3: Once you click tex.pak then click folder when it say "." so the texture folder will show up.
Go to Item since thats where all Armor,weapons,Dogi in that section but they can be more
forum.dboglobal.to/wsc/index.php?attachment/2905/
Step 4: Find the file call a_cos_05_i1_h_m.dds then you right click it and click "overwrite" then you find my file or anyone file if you using "Goku Gi (Roshi emblem) Dogi
Overwrite the following files
a_cos_05_i_h_m.dds (Top)
a_cos_05_i2_h_m.dds (Gloves)
a_cos_05_p_h_m.dds (Pants_
a_cos_05_b_h_m_002.dds (Shoes)
forum.dboglobal.to/wsc/index.php?attachment/2906/
Step 5: Congrats you install a DBO texture mod for your game. Remeber, only you can see the texture mod since its client side so people only see you with the original Goku Gi texture. Have fun and make sure to back up your "tex.pak" before using the mod.