Hi all 
 
I have a mid-90s MIM Jazz bass and I am looking to upgrade it slightly in the looks department.  As you can see from the image below, my jazz doesn't have the usual pickguard/knob/knob metal plate combination.  Instead, it has a rather fetching all white pickguard which I'm not too keen on. 
 
[attachment=2590:Jazz.JPG] 
 
I've had a quick search through the forum but I can't find an answer to my question.  Basically, I'm pretty sure that a replacement pickguard/metal plate will not match 100% to the existing screw holes.  Therefore, is it easy/safe to drill new holes in the body?  Has anyone done anything similar and have any words of wisdom to pass on? 
 
Also (forgive the noobie question), is it just a matter of removing the old knobs and putting the new ones on or is there anything I need to look out for when buying replacements? 
 
Many thanks in advance. 
 
Rick