First, none of the FSAE cars will be good to "copy" for a variety of reasons, some already stated above. What class do you plan to race in? While FSAE cars are allowed to run in A-mod, not all of them meet A-mod specs. Grab a copy of the SCCA Solo2 rulebook and make sure whatever vehicle you're going to design/build meets those rules.
Exactly how much funding DO you have at your disposal? You're talking $200 in chassis material which is not much. Here's a quick (and very low-balled) rundown of what it costs to put a typical FSAE car together:
Used Engine $500
We won't include Engine Management, assuming you run a stock bike motor.
Fuel pump & plumbing $400
Aluminum Radiator $300
Chromoly Tubing & Sheet $500
Mountain Bike Shocks $1000
Rod Ends, Spericals, & Fasteners $1000
Steering Rack & U-joints $300
Brakes, Master Cylinders, Plumbing $1000
Wheels & Tires $1200
Differential, Axles, & Tripods/CV-joints $1500
Electrical & Gauges $600
Harness, Seat, Pedals, other Cockpit stuff $400
Body, uh, nevermind...
So, we're up to a total of $8700 so far, and that's VERY bare-bones. Double that and you might be able to put something together. Money definitely isn't the whole equation either. The number of man-hours to put one of these together is huge.
That said, if you really want to build one of these cars, go out and buy all of Carroll Smith's "To Win" series and start reading those. If you have friends who are engineers helping you, then ask them how to build one. If they don't know how, then keep on reading and learn a whole lot more about vehicle dynamics, mechanics of materials, mechanical design, etc. These are not big go-karts, and can be a pretty wild ride with just 80bhp, nevermind the Huyabusa. There have been cars made like that (See Racecar Engineering a few months back for the article about DJ Racing's "Firehawk").
Courtney Waters
UCD Formula SAE