$2200 on my kitchen table

[Gilles]

My hope is it doesn't affect daily usage and gives me that little extra push vs other 987.1s.[/QUOTE]

I installed the IPD plenum along with the large GT3 throttle body about 5 years ago and I don't thing that you will notice any downside on a daily driver, IMHO the biggest difference you will notice is a very smooth power curve and perhaps a 'relaxed breathing' (...?) at the higher rpm range.

I also have the SpeedArt exhaust that complements the IPD, I would love to have a nice set of headers ($$$) but one of the main brand manufacturer (cannot remember whom..) told me that the real improvement would be with a catless header.
Unfortunately, living in CA that may not be a very good idea, unless you want to remove them every other year to pass smog..