Hey guys, new member here. I have a 66 mustang with a 302 and c4 auto. Seems to have no vibration while driving or even when stopped in neutral. But once i come to a complete stop in drive, it starts vibrating pretty bad. Ive been getting around by going into neutral at stoplights. Any suggestions as to what it could be? Im not a mechanic nor do i really work on cars. Will probably have to take it to someone.