If u have 3k just buy a fox hatch off Craigslist for 2500$ or so and get some spray. If u insist on modifying your ONLY car then go top end. Any top end kit will increase the value of your car and you can absolutely do this without paying for a tune. And if u did decide to tune just dish out the 1000$ for a PMS. If u add forced induction there's no way to do it for less than 4k properly unless u get used stuff. Adding forced induction will bring the need for extensive fuel management and tuning issues. I build turbo cars. Just go to a track event and look around and talk to people that are there to race and not to sell.
U can get a set of brand new AFR 165's or 185's, steeda cam, used trickflow or equivalent upper/lower intake manifold, a C & L maf, 24lb Injectors, 190lph intank pump, Aftermarket fuel rails and FPR, msd dist. Cap and wires, 70-75 mm TB, aluminum radiator and fan for less than the price of a supercharger kit. And your car will eat up any supercharger car that is running stock longblock. And you will be able to drive your car day in and day out without a bit of worry. Minus tires and clutches.
Just friendly advice. I try to talk people out of forced induction if they are on a modest budget and have only one vehicle. Some fellow mustang enthusiasts will scream turbo this or charge that but they aren't gonna pay for your several trips to the dyno or when you start blowing headgaskets. On3 makes a neat kit. For an attractice price. But its far from everything you'll need I don't care what anybody says. And when its all said and done you'll have a tired motor, slipping clutch, and a newfound fear of making weekend road trips. If a stock longblock car with a turbo or supercharger is going for 5500 then the same car would go for 6500 with a proper top end. You can shop around and see tons of charged/turbo cars for sale that all have common ads--- "needs tune" or "all it needs is" --- u get the point. I've gone on long enough. It's just that I have seen and/or worked enough "driveway dreams" this year and its time somebody post this information in atleast minor detail. Good luck to you. And give it hell either way.
I don't race on the street..... Unless the track's closed.