993 instead of a 64 but I think it is close to the same height required. With my jackstands (similar to your front stands) on the highest point and the bumper off I still had to disassemble the ISV to clear on the way out. The jackstands were at 21.5" not sure what that equaled at the bumper but you get the idea.
Have fun with it! Make sure you put your wheels or something under the car when you are working on it just in case.
