Water pump... Looks like leak from weep hole .

[E55 Bulldog]

So I'm thinking I have to replace my water pump. Looks like a pretty easy straight forward job. Watched all the Poerstrokehelp videos but it was on a 99-02 7.3... Any difference between engines in this department?

What water pump should I buy, I see them form $100 - $300 .... cheaper price would be best.

Do you guys know if they come as a kit with all the hardware and gaskets.?

While I'm in there is there anything else I should change?

Can I only get certain parts from ford?

How much coolant do I need and do you know the name of the additive I should use?

Thanks guy, it its not one thing, it's another.