I would get the
Fabspeed catback, update to newer headlights/
taillights,
deamber, 18" wheels if you don't already have them and nice set of tires. If suspension is worn you can get the
RoW M030 kit.
Also,
997 shift console upgrade is almost mandatory.
Get the
updated coolant cap,
GT3 brake ducts (if you intend to drive you car hard/take it to the track). These are on the cheap side.
The one-press drop top module they're talking about is SmartTOP. I have one and it works wonderfully.
http://www.wit-usa.com/sms/shop/index.php?p=b3JnYT1zbWFydHRvcCZncm91cD0yJmxhbmc9Mi ZjdXJyPTI=&action=products&cat=11