Last I was in ISO900x activity was about 8 years ago. Back then.....
If you did design work you went after ISO9001.
No design work then ISO9002 (looks like the 7.3 section of the 2008 standard you could ignore)
Just service was 9003
If you are supplying the automotive industry they have their own flavor of 900x (QS9000?)
Here is a link I found to get you headed down the road of confusion (describes the standard at a decent level).
http://www.praxiom.com/iso-9001.htm
The only way to ignore a section of the standard is if it flat doesn't apply to your business. You can't selectively ignore it just because you want to.
I know an auditor that runs around doing audits of smaller businesses. He says he has to find some problems to satisfy the registering organization but can't look too hard and make the client mad. I see no ISO900x quality 'add' for what he does or the organizations he audits. Seems all political to me.
For a small shop I would wonder how you would prove everyone is trained on what they do and how you prove your equipment and measurement instruments are within the tolerance you require.
A good auditor will ask generic type questions that will let them 'drill' into your organization and allow specific questions without knowing a pre canned set of questions to answer. Remember each answer needs to be backed up by some kind of controlled documentation. otherwise the auditor isn't doing their job.
You also have to do audits on yourself. How do you know the auditor knows how to do them? Documented training records. That implies taking an auditing course.
How do you know your measurement instruments are accurate? Do you have them run through calibration once a year by a recognized calibration company?
For a big company they have all kinds of overhead to cover this stuff. The challenge is how do you do it for the 1 man or small shop. I have no experience in the small company area.
Every bit of ISO is a cash cow for someone. You pay through the nose for ISO know how to get you educated and pass the real audit.
For the several big computer companies I was associated with it was a real
'circle jerk' when they learned 'the auditors are coming'.