First off welcome - re: what to do first is "learn the car" - how it handles in all conditions (wet, dry, etc) and all it's personality traits. They each seem to have their own personalities. Next find out what and if all maintenance has been done - including bushings, struts, cooling system - brakes-trans-diff flushes, before you do any mods. After that slowly add mods (preferably 1 at a time) This will help save you headaches (not to mention your wallet$$$) further down the line. Your neighbor as well intentioned as he/she might be, doesn't have to pay for mods and things that might pop up. As far as mods, after learning what your car is already capable of - then decide what you want first looks, handling, power and where it needs more power then work from there. That's the best advice I can offer.