Which chips can be installed in a PS2v9

[legion1234]

Alright tyler i understand you but the problem is that i need to calculate the money i'm going to spend in this very carefully because you know i'm not rich and i'm very carefully when spending money so i really need to know if you are going to charge me money or not for the install.

Thanks anyway.
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About the friend thing we could do something like in that game Romance of the Three kingdoms 8:

First we need to go under a peach tree and do the following:

First you raise your sword and say......even if we didn't born in the same day.

Then i will raise my sword and say....We wish to die on the same day.

after that we would be Sworn Brothers and you could do the free install.

So what do you think?