acy76
For all that is may matter, the S10 came with a separate vacuum pump. It also uses a regular GM alternator, y'know, the cheap kind.
If it makes it any easier for you, this pump doesn't need a oil feed or return.
I don't know if it is still available, my best guess is it is.

Keep us posted on the project. Many of us read your posts, we just don't respond.

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1994 Chev S10 Ext.Cab with C223 5spd
1991 S10 Sonoma Ext.Cab with C223 5spd - SOLD

Kubota B6100 diesel with accessories