Quest4Less said:
I'm looking at tinting (as dark as is legal) and possibly a sunroof. Also I want to get a better sound system.
In the future I may look at performance - maybe even NOS.
You still didn't say what type of car it is, but here's what I can offer both of these companies sponsor my cars and did my work.
Here's a message forum that you can join with car enthusiasts b
http://24kracing.com/v-web/bulletin/bb/index.php
TINT MASTER
6033 Shawson Drive Unit #9, Mississauga, ON
Contact Name : James
Telephone #: (905) 670-5181
http://www.tintmaster.com
KROMER RADIO
Kromer Radio Ltd.
420 Bathurst St., Toronto, ON M5T 2S6
Contact Name: Martin
Tel: (416) 920-6700
http://www.kromerradio.com
As for Nitrous, be careful who you see for the installation, ,make sure it's a reputable shop and someone experienced, these days every kid who saw Fast & Furious trys to do the installation and run it on their cars, if it's not done right or the shot is too big it can cause a lot of problems.
I'm running it on 3 of my vehicles, one of them being a fogger system and still problems arise because of it. Not to mention how the cops love to ticket for it.