I fixed my thump thump thump thud noise haha it was the drivers side wheel bearing assembly was loose as hell after work tonight me and my boss "had a modded 98 GTP with a cobra s.c and cadillac lifters and injectors ran low 12's!" anyways the center nut in the middle of the hub was soooooo damn loose it was scary haha noise went away along with vibrations haha also i got my d/s rotors MAN THEY ARE SEXY ha =]