theoretically speaking of course. most people would say anything altered other than stock is modified. currently i say my car is "stock". it has a 180* thermostat, fms 9mm wires, msd blaster coil, kirban afpr and k&n. but i plan to use gt40p heads, and a stock fox upper intake. possibly a gt40 intake. while all are "stock parts", would you consider the motor stock?