[Kidd-7]

I'm working on my parents Trans Am, helping them out and keeping my inheritance in good shape. LOL.
Anyone have any knowledge of the 403 Olds?
I need to change the water pump, there is an option for a high flow pump and not sure how to tell which one is on there. I've done a bunch of googling and search some TA forums, but didn't find answers.
Thanks.