What size are the water pump bolts on an 89 LB9? I'm slowly putting everything back togather and can't remember off the top of my head. Do any of them go through any brackets? Sorry for the dumb sounding question, don't actually have the car at home to look at..

Like what size socket or what size thread pitch, lenght?
At any rate, if you need new ones, I would try a parts store. Just ask for water pump bolts they should have them. Unless your trying to save a buck or so.
I'm not sure about the brackets and what not though.

it's serpentine right if it is there are 4 all the same size and they just bolt up w/o going thru any brackets if u have v belts well thats a different story they got hru brackets