SO... I solved all the vibration when I replaced my torque converter and transmission. Got a street/strip 904 from Bob Mazzolini Racing and a Hughes 2000 stall torque converter. Really like both. SO vibration in my case was bad tranny mount, bad harmonic damper and bad torque converter. ALL vibration is gone, but I still have a bit of pulsating droning inside the car at 2700 rpm in neutral or drive. It is really weird- you can hear/feel pulsating in the car but outside it seems as if engine and exhaust DON"T pulsate at all. I am positive this is an exhaust issue. Will let u know when I finally sort it out.