designing racetracks is similar to designing roller coasters only the race tracks are way easier :cool
when it comes to a Ford GT...... by far the most important detail is the average lap speed :thumbsup the length of the track would be second. on road courses that are real tight which reduces the average lap speed significantly, GT's will overheat and Lotus Elises will be running circles around you. the only chance you would have on a track like that would be to build your GT like Matech did (2,550 lbs and no supercharger)
Donny, make sure you tell them you want a average lap speed of 100+ mph......
:cheers