The whole car seems to pulsate(what i described as a shudder). I have tryed new rotors (Autozone I hate to say, I even turned .005" off the new ones to ensure they were true, as I unfortunately work at A-zone. college student)I am thinking I should get higher quality rotors, You guys seem to recomend Stazi, but I would like to finds a Cougar in a junkyard to get the caliper brackets for the front, so i can use SVT sized rotors. But the pulsation is pretty annoying, so maybe I will have to get normal sized rotors first. Could it also be a sagging drivers side motor mount, i am thinking about replacing it, as I have a different vibration on hard acceleration. Sorry about the long post. Jason