It was corroded to the timing cover when I got the cover off the bolt screwed out easily.

 

Water pump stud kit:

http://www.dormanproducts.com/p-25888-23744.aspx

Local parts store should be able to get for you.

 

I pulled the winter beater out and had to do this exact job. Small coolant leak turned into a fairly decent size job. I changed the timing chain and gears as well (chain was a little sloppy). Didn't have any broken bolts or studs though.

 

That's what I got it was $9 for those 3 bolts and I only was able to use the 1 with the stud on the back.