I see that you"re in Dallas like I am! I'm only 18 in college and I've too many things done to my car that I would be able to help you out with. Long story short, take your time modding your Z. Meaning no cutting your exhaust, no name crap, eBay springs, etc. I can tell you in person on what you should do with your budget.
And you could've bought my car! I'm no more that 1 hour away at most from you
