Having a few issues installing the heater core

[68bird]

Ok I've got everything i need to put the new heater core in my only problem is the seal kit i bought has a lot of pieces that I dont remember taking off or even seeing when we took the old one out. Can anyone tell me where these foam pieces go?

http://ecx.images-amazon.com/images/I/41M6U7rMYQL._SL500_AA300_.jpg

My guess is the top piece goes btw/ the heater core and the box so it doesn't rattle around and the bottom left piece goes around the inlet and exit tubes for the core, but after that I'm not sure where anything else goes

[JL8Jeff]

A lot of those seal kits have extra pieces to cover multiple years and applications. Just replace the pieces you know came out.

[HardcoreZ28]

The two on the right look like they are for the defrost vents. As Jeff said some of the others may be for other applications