Beyblade Customization.Good Combos

I was thinking of customizing beys to make it good.. i have Storm Pegasus 105RF ,Mirage Virgo GB145BS , and Dark Gasher CH120FS .So Which parts should i customize? I want to make all of them as strong as they can be!Stupid
There's a thread for that.
You really need to read the whole forum, ask this in Build Me A Combo