I just bought a pair of headers for my blazer and can't figure out what these parts are. I've never done headers before so I really know nothing about them. the instruction manual for the headers only has a list of what parts come with it but there are no pictures so I don't know what's what or what anything is actually for, where it goes, etc. so any help here would be appreciated.

 

The top picture and maybe the second are reducers?? Not sure what the last picture is.

 

last picture, the thing on the right is a spark plug wire end, and the thing to the left of it, maybe a new boot with a metal casing for the end of that spark plug wire? Maybe one of the header tubes run close to a plug wire so they provided those parts to redo the end of the wire and make it a little more heat resistant?

first two pictures look like scrap metal lol I have no idea

who makes the headers? Maybe you can find some sort of manual or more info online?