First off its 3:30 in the morning and im writing this, had to finish a paper for psych. Anyway i have $600 in tax returns coming and i have lots of ideas on wut to spend it on. First off I can buy a Zex wet kit for $500 and have it installed for next to nothing, but i do not have to much knowledge with nitrous, will it hurt my engine alot or is it safe. Or I can buy a new headunit, lower my car and get 2 10" subs, last is just getting 3.90 gears for my car. Im really leaning towards the nitrous cause i want my car faster, im just really worried about something happening to my engine. Everyone i talk to says the zex kit is very safe and i wont have a problem with it. Thanks for any info.