I'm a newbie with a vibration problem I'm having with my '93 integra GS-R. The vibration only happens at freeway speeds and only when the engine is being loaded (happens when I go uphill or when I accelerate). I'm sure it's not the alignment or wheels out of balance. Could I have (a) broken engine mount(s). It feels like the vibration is coming from the center-front of the vehicle. Please advise.