Thanks for the reply ... just finished replacing Bosch FR6LDC with Bosch FR7LDC+. All were very worn but only bank 1 misfires so far ... see attached photo.
I can only go on what information was given and what I have read so far ... this is my first Porsche project ... so there is a large learning curve. If it turns out to be just some badly worn spark plugs to have it run smooth, that would be great. She wasn't treated well and I enjoy the challenge.