I find splitting them carefully with a razor knife and then just using a soldering iron to "plastic weld" them back together. 
Since doing an airbox for my zetec which involved lots
of plastic welding. I have purchased a real plastic welding tool and various plastic rods. I have gotten pretty good at it. 

Bill M
Mystic,CT

On Dec 18, 2012, at 8:40 PM, David Beierl <dbeierl@ATTGLOBAL.NET> wrote:

> At 08:10 PM 12/18/2012, Mike B wrote:
>> Or drill each tab and use tek screws to put it back together, saving
>> yourself $32 on those clips.
> 
> There is that in what you say.  Are they really $3 each in
> sets?  Ouch.  Mechanically I don't think it's a good solution though,
> because those thin tabs aren't meant to have their stress
> concentrated on a little hole in the middle (not to mention the
> difficulty when your hammer-driven knife fails to follow the weld line).
> 
> Yrs,
> d