most noticeable bang for the buck;
short shifter, or
shift knob and boot, or
ebay stb's, or
ebc green stuff pads, or
high flow test pipe, or
HKS super power flow filter, or
various GOOD car ext. products, or
H4 headlight conversion, or
good fog lights, or
180sx center panel, or
stainless brake lines
best thing for the car;
full fluid/filter change, or
NGK tuneup, or
4wheel alignment, or
rotate/balance&alignment, or
electric fan conversion, or
new large cap. battery, or
battery relocation, or
suspension bushings, or
oil cooler/relocation kit, or
new belts/hoses, or
custom diff oil cooler, or
custom underbelly pans for airflow direction, or
custom brake ducting
A good bit of these had been mentioned. These are some things I could do for way less than $100 or $100 even.