Not a big poster but got a question rolling around atm.
Upgrading to new style injectors on a megasquirted project, lower plenum and fuel rails all have enough meat to bore out.
Old style injectors have a 11mm oring new bosch ev14's have 14mm both ends, What size should I be drilling the bosses to ensure a good seal? 13.9 13.5? Is there a rule of thumb? Also mentioned it to a workmate he said it would be best practice to do it with an end mill because a drill bit will create a tapered hole, is this correct?