I do not consider a drop in filter with stock intake piping and aftermarket mufflers to be modifications that give any real power. I picked up maybe 5hp/5tq from those. I knew exactly what was done to the car. Since then I have invested around another 8k and have a car that should run low 10's/ high 9's if it can hook and it is still streetable. Show me an import for 12k that can do that. That R33 you posted was very nice and quick....but i was reffering to import cars that were sold here state side.intake/exhaust aint stock. I still dont believe it. Not saying i dont believe *you.... but i dont believe you knew everything about that particular car if it ran that "stock"
also, you think the mid 90s Turbo imports wouldnt respond to intake/exhaust?