Where do the broken impeller pieces go..?
 

Redoing the water pump on a '97 986. Have read previous threads,but can not find an answer to where the broken impeller pieces end up so I may remove them. I also had the bad luck of having my little numbered egg carton with the bolts of differing sizes BLOW OVER by the wind, so now I dont know which long bolts go where.
And am hoping this from a thread is adequate:

without tools, I jack up the rear of the car, flip the tab on the coolant tank into the upright position, open the cap, fill the tank, start the car, run it at 2500 or so rpm and keep topping off the water as it burps. Makes a little bit of a mess but when I've had to do it at the track there is no interior in the trunk and we're only using water so it isn't that big of a deal. Takes 10 minutes or so until the fluid level stabilizes. Be sure to check it again and top off as needed after its run and cooled.

Thanks

Inside the cylinder heads and throughout the coolant passages within the block.
Once they contaminate the system removal is near impossible without disassembly.

There should be 2 longer bolts. They go in the two holes that have the locating sleeves attached. The rest are all the same size