SMA performance mods - are they worth it?

[Chewy]

Folks,

The local dealer is really pushing the SMA
performance parts hard. Specifically, they are
recommending getting the Air Raid intake system,
and the SS headers and Sport Exhaust. Does anyone out there have this setup? Can you comment on performance, noise, MPG, etc? Dealer
claims if they do the install, it's all covered under the warranty.

Curiously, they are not selling either the computer software upgrade (claim there's a bug) or the supercharger at this time. Wouldn't a software upgrade be required to get the most out of this setup?

Thanks.