hyrdoboost upgrade question

[Tbruz]

1997 Tahoe 2 door.
Doe anyone have the PN of the correct booster to use on a 1997 tahoe hydroboost upgrade?

I just added the correct PS pump and I think I see two choices for the booster.
AcDelco 178-578 or AcDelco 178-579.
Are there other choices as well?
Thanks in advance.
Tbruz

 

[SunlitComet]

how about telling what year and model and weight classification the ps was from please?

 

[Tbruz]

thanks Sunlit.
The PS pump I just put on is AcDelco 15909826. Application guides show its correct for a 1997 Tahoe 2 door; 6.5L diesel.
Tbruz.

 

[SunlitComet]

then delco 14PB4045 which is remaned or delco 178-578 which i believe is new.