Ok Kip. Most start with the big three.
#1 is a 180° Thermostat and Tranny cooler. You can do both for under $50. They'll cool your block, tranny, and intake for better efficiency and power, not much, but some, but they'll mainly protect your investment since you'll be running her harder.
#2 is an ADTR intake. Email email@example.com
I think he still has some Series 2 intakes available from the last production run. They're in powdercoat right now.
#3 is your exhaust. Don't open up the pipe diameter, just remove the resonator, and replace the cat and muffler with higher flowing models. You're after light to light racing, so you need to protect your low-end torque. Losing backpressure would kill you, and a 3" pipe would do just that.
After the big 3, you can move into the expensive stuff like chips, heads/intake manifold, ported exhaust manifolds/headers, etc. But just the big 3 might surprise you.....and your quarry.