Well, she does want exhaust sometime too, but I thought I would let her pick that out for herself. I personally have and love the Bassani system, but she may want something that has good performance but not as agressive sounding.
UPDATE
My truck: Black 03 SS
Engine size: 403
Camshaft: Crane 210/218 .531 .531 and Crane 1.8 rockers
Cylinder heads: Patriot
Pullies: 13 psi pulley
Intake system: D1 Pro Charger w/ 2 core air to air intercooler
Exhaust system: Bassani headers and cat back system
PCM modification: HP Tuners
Tranny: 65E
Exterior: 22" Giovanna Genoa wheels w/Parelli 305's
My gf just bought an '06 SS and I was going to get her a few mods for her upcoming birthday. I was going to get her the volant cold air intake and a Westers PCM tune. I know it isn't much, but I know it would be something she would like.
Also, I was reading about someone changing the throttle boddy bypass and getting more performance out of it. However I have heard doing that can effect cold weather drivability. Any thoughts on this?
My truck: 03 SS
Engine size: Stock
Camshaft: Stock
Cylinder heads: Stock
Pullies: 8 psi pulley
Intake system: P1 Pro Charger w/ 2 core air to air intercooler
Exhaust system: Bassani
PCM modification: Fast Tech (I think, at least that is what I was told it was)
Tranny: Stock
Exterior: Stock