So I got the ‘08 CBR coils fitted but had to cut the skirt off the boot to get it all the way in.    I pulled the boot off and placed it over a suitable socket, then ran a Stanley blade over it.      You could take a bit more off than I did. About half the skirt is right.      Coil sitting all the way down in the hole...   Now time to crimp on the new Denso connectors.   EDIT: at first I soldered the crimps in because I didn