Finished installing the drivers side FPA header on my 57 T Bird today. Had to remove the plugs to install the headers. Went to reinstall the plugs and none of the sockets in my collection would work. All too long and could  not get a ratchet or wrench on the plug to tighten it. Asked John Mummert because I have his heads and he thought Matco may have one.  What are you using ?  Considering cutting down a socket short enough to clear and welding a small nut on the end so a wrench will turn it. Will call FPA Monday and see if they have any ideas.