I still have the vibration in my driveshaft, I have noticed that if I start car in neutral shifter seems to move around, it has been a while since I drove somethig manual trans that was rear drive, i remember they move some, but this seems a little excessive, is this a sure sign of a broken tranny mount, the mechanic that works on my car wants to replace the flex disc, but I don't think that is it, it doesn't look cracked or worn too bad, he says the mount is fine, but I have doubts, I have all new motor mounts and trans mount here, is this easy work, I have a decent socket set, and a floor jack...also the mount under the oil filter seems like it is compressed, kinda bulging, is this ok, I have read that if it is bad the filter will sit on it, and this is not true in my case. I imagine new trans and motor mounts would be a good idea anyways even if not shot yet.